Txhua qhov kev txhim kho cov dej ntws tau zoo pib nrog kev ntsuam xyuas zoo ntawm koj qhov chaw dej. Oversizing los yog undersizing koj lub cev raws li kev kwv yees ua rau cov emitters txhaws, tsis sib xws, lossis kev nqis peev uas tsis muaj nqis. Ob qhov kev ntsuas tseem ceeb yogtus nqi ntwsthiabdej siab.
Rau qhov dej ua liaj ua teb, pas dej, lossis kev sib txuas hauv nroog tsis muaj lub ntsuas dej ntws:
- Nqa ib lub thoob 5-gallon thiab ib lub stopwatch.
- Qhib lub qhov hluav taws xob tag nrho thiab sijhawm pes tsawg vib nas this (T) nws yuav siv sij hawm los sau lub thoob.
- Flow tus nqi:
Flow Rate (GPM)=(5 nkas loos ÷ T vib nas this) × 60
Piv txwv:Yog tias lub thoob ntim hauv 15 vib nas this:
Flow Rate=(5 ÷ 15) × 60 =20 GPM
Khiav qhov kev sim no ntawm qhov tseeb ntawm kev sib txuas uas koj lub cev yuav kos dej - tib lub twj tso kua mis, tib lub kav dej. Kuaj ib feeb tag nrho yog tias ua tau kom suav rau lub twj tso kua mis cycling.
Siv asiab ntsuasntsia ntawm qhov chaw ntawm kev sib txuas. Rau qhov dej, sim ntawm lub twj tso kua mis. Rau cov kab ke hauv nroog, sim thaum lub sij hawm ntawm hnub koj npaj rau irrigate (qhov kev thov siab tshaj plaws txo qis siab). Cov ntaub ntawv:
- Static siab (tsis muaj ntws khiav)
- Dynamic siab (thaum sau lub thoob 5-gallon)
Kev khiav hauj lwm siabrau drip daim kab xev yog 8-15 PSI. Rau cov raj xa dej uas hnyav dua - phab ntsa emitters, 15-30 PSI yog qhov zoo. Yog tias koj lub siab dynamic poob qis dua cov kab no, koj yuav xav tau lub twj tso kua mis.
Txoj kab uas hla ntawm cov kav dej txiav txim siab npaum li cas dej koj tuaj yeem txav tau yam tsis muaj kev sib txhuam ntau dhau. Kev lag luam tus qauv lub hom phiaj tshaj tawm yog5 feet per second (FPS)rau PVC mainlines los tiv thaiv surge kev puas tsuaj thiab khaws kev sib txhuam losses tswj tau.
Table 1: PVC Sch 40 Pipe Flow Capacity ntawm 5 FPS
(Tau qhov twg los: Rain Bird PVC Class reference,Irrigationtutorials.compipe sizing chart)
| Pipe Loj (PVC Sch 40) | Qty per Acre | Sau ntawv |
| 3/4" | 8gpm ua | Thaj tsam me me lateral |
| 1" | 15-20 GPM | Standard cheeb tsam muab |
| 1-1/4" | 25-36 GPM | Ntau thaj chaw |
| 1-1/2" | 40-50 GPM | Main kab, nruab nrab system |
| 2" | 70-80 GPM | Loj ua liaj ua teb loj |
| 3" | 150+ GPM | Kev lag luam loj |
| 4" | 220+ GPM | Loj lag luam loj |
Txoj cai tseem ceeb:Tsis txhob tshaj 5 FPS hauv koj lub ntsiab lus. Tshaj qhov nrawm no ua rau dej rauj, kev sib koom ua ke, thiab ua tsis tiav ntxov.
Faib koj cov av tag nrho rau hauv ib cheeb tsam kom txhua cheeb tsam ua haujlwm hauv koj cov dej ntws. Ib qho yooj yim xam:
Number of Zones=Total System Flow Yuav Tsum Tau ÷ Available Flow Rate
Piv txwv:Koj muaj 8 GPM muaj nyob rau ntawm lub twj tso kua mis thiab yuav tsum tau muab 20 daim av ntawm 30 "kab qoob loo nrog cov kab xev uas xav tau 0.45 GPM ib 100 ft ntawm kab.
- Kab ntev ib daim acre (30 "sav): ~ 14,520 ft
- Tag nrho qhov system thov: (20 × 14,520) ÷ 100 × 0.45=~ 13,068 GPM - obviously tsis yooj yim sua
- Kev kuaj xyuas qhov tseeb:Koj yuav tsum tau muab ib cheeb tsam ib zaug. Ntawm 8 GPM, koj tuaj yeem ua haujlwm kwv yees li 1,780 ft ntawm kab ib txhij.
- Cov cheeb tsam pom zoo: 8-10 thaj tsam ntawm ~ 1,700 ft kab txhua.
Tsim koj lub submain layout los muab ib cheeb tsam ntawm ib lub sij hawm los ntawm cheeb tsam li qub. Txhua cheeb tsam valve tswj ib tug submain ceg. Tsis txhob tsim ib cheeb tsam uas xav tau ntau tshaj li qhov koj lub cev tuaj yeem xa tuaj.
Ib daim ntawv teev cov ntaub ntawv npaj tau zoo - tiv thaiv nruab nrab - kev teeb tsa cov khoom siv thiab cov teeb meem kev sib raug zoo. Hauv qab no yog cov khoom tseem ceeb uas tau tsim los ntawm qeb. Qhov ntau yog muab rau ib daim acre rau cov kab qoob loo ntawm 30" txaj -kho rau koj cov kab sib nrug tshwj xeeb.
| Cheebtsam | Qty per Acre | Sau ntawv |
| Backflow tiv thaiv | 1pc ib | Yuav tsum tau code ntawm qhov chaw dej |
| Cov ntxaij lim dej (150 mesh) | 1pc ib | Rau qhov chaw huv |
| Sand media filter | 1pc ib | Rau qhov dej los yog dej saum npoo av |
| Disc filter (120 mesh) | 1pc ib | Secondary filtration |
| Siab regulator (8-15 PSI) | 1-2 pcs | Ib cheeb tsam yog cais ib cheeb tsam |
| Fertigation injector (Venturi lossis twj tso kua mis) | 1pc ib | Saib Phase 8 rau kev xaiv |
| Siab ntsuas | 2-3 pcs | Upstream thiab downstream ntawm cov ntxaij lim dej |
| Cheebtsam | Qty per Acre | Sau ntawv |
| Mainline PVC Sch40 (2 ") | ~ 200 ft | Field perimeter + cross mains |
| Submain PE yeeb nkab (1-1/2 ") | ~ 400 ft | Txhua 200-400 ft ntawm lateral length |
| Drip daim kab xev (5/8 "los yog 7/8") | ~ 14,500 ft | Kab sib nrug - nyob ntawm |
| PVC fittings (lub luj tshib, tees, reducers) | Raws li xav tau | Match yeeb nkab diameters |
| PE adapters | Raws li xav tau | Txuas PE rau PVC |
| Cheebtsam | Qty per Acre | Sau ntawv |
| Cov khoom siv hluav taws xob (barbed) | ~ 50 pcs | Ib daim kab xev |
| Cov kaus mom kawg (khi- tuag lossis ntsaws lub hau) | ~ 50 pcs | Ib daim kab xev |
| Qhov punch / drip daim kab xev punch | 1-2 pcs | Match haum barb txoj kab uas hla |
| Grommets / sealing rings | ~ 50 pcs | Hloov thaum txhim kho daim kab xev tshiab |
| Kho cov couplings | ~ 10 pcs | Rau cov kab xev puas |
| Nylon cable ties | 1 keej | Ruaj ntseg daim kab xev thaum kawg |
- PVC yeeb nkab cutter los yog sawzall
- PVC cement thiab primer (rau Sch 40 pob qij txha)
- PE yeeb nkab clamps (stainless steel worm-tsav)
- Daim kab xev ntsuas (100 ft yam tsawg kawg nkaus)
- Lub thoob rau ntsuas qhov ntws
- Siab ntsuas nrog fittings
- Cov khoom siv trenching
- Txoj hlua kab rau txoj kab ncaj nraim
Table: Drip Irrigation System Nqis ib Acre (Farm Scale)
| System Hom | Khoom siv nkaus xwb | Khoom siv + kev ua haujlwm | Hom Scenario |
| Basic | $1,200–$2,000 | $2,000–$3,500 | Kab qoob loo, phau ntawv li qub |
| Txuj | $2,500–$3,500 | $3,500–$6,000 | Orchards, tsam li qub |
| Advanced | $4,000–$6,000 | $6,000–$9,000 | Automated, fertigation, sensors |
(Source: USDA NRCS NC441 cost data, BhumiCalculator 2026, OneAndDonePrep 2026)
| System Hom | Khoom siv nkaus xwb | Khoom siv + kev ua haujlwm | Hom Scenario |
| Basic | $1,200–$2,000 | $2,000–$3,500 | Kab qoob loo, phau ntawv li qub |
| Txuj | $2,500–$3,500 | $3,500–$6,000 | Orchards, tsam li qub |
| Advanced | $4,000–$6,000 | $6,000–$9,000 | Automated, fertigation, sensors |
Cov nqi ua haujlwmsib txawv heev nyob rau hauv cheeb tsam thiab seb koj ntiav ib tug neeg ua hauj lwm los yog siv ua liaj ua teb ua hauj lwm. Cov txheej txheem yooj yim nrog cov neeg ua haujlwm paub txog tuaj yeem ua tus kheej - nruab kom txo cov nqi los ntawm 40–60%. Rau cov ncauj lus kom ntxaws ib-acre tus nqi tawg nrog rau daim kab xev, fittings, thiab kev ua haujlwm, saib peb phau ntawv qhia ntawm/info/drip-tape-nqi-ib-acre.
Thaum xaiv fittings rau koj daim kab xev drip, zoo tseem ceeb tshaj tus nqi. SINOAH muaj ntau yam ntawm drip daim kab xev fittings nrog rau barbed takeoff fittings, kawg caps, thiab kho couplings tsim rau kev ua liaj ua teb - qib durability. Xaiv fittings nrog barbed nraub qaum uas phim koj daim kab xev sab hauv txoj kab uas hla thiab ruaj ntseg tag nrho cov kev sib txuas nrog stainless hlau clamps nyob rau sab nraum zoov siv.
Lub taub hau sib dhos yog qhov chaw tswj hwm ntawm koj qhov system drip. Txhua yam khoom siv yuav tsum tau muab tso rau hauv cov kab ke kom raug. Txhim kho cov no tawm ntawm kev txiav txim yog qhov yuam kev tshaj plaws uas cov neeg pib ua, thiab nws cuam tshuam kev tiv thaiv.
Los ntawm qhov chaw dej mus rau qhov chaw, nruab rau hauv cov kab ke no:
Dej qhov chaw → Backflow Preventer → Primary Filter → Secondary Filter →
Siab Regulator → Fertigation Injector → Mainline
Backflow tiv thaivyuav tsum ua ntej. Nws tiv thaiv cov dej tsis huv los ntawm kev ntws rov qab mus rau hauv koj qhov chaw dej huv -ib txoj cai lij choj nyob rau hauv feem ntau cov cheeb tsam thiab qhov tseem ceeb rau kev nyab xeeb zaub mov ntawm cov khoom ua liaj ua teb.
Thawj lim(feem ntau yog xuab zeb media rau ag dej) tshem tawm cov sediments loj: xuab zeb, silt, thiab cov khoom organic uas ua rau cov khoom hauv qab. Muab nws thib ob ntes cov teeb meem ua ntej lawv ncav cuag cov ntxaij lim dej zoo dua lossis cov tshuaj txhaj tshuaj.
Secondary lim(screen lossis disc, 120-150 mesh) muab kev pom zoo rau kev tiv thaiv emitter. Tom qab thawj lub lim dej, nws tsuas yog tswj xyuas cov khoom seem zoo, txuas ntxiv nws lub neej kev pab cuam thiab txo kev txij nkawm.
Siab regulatorlos tom qab tag nrho cov lim. Cov dej huv ntws los ntawm tus tswj hwm ntawm qhov sib npaug ntawm 8-15 PSI. Yog tias ntsia ua ntej cov ntxaij lim dej, cov av khib nyiab ua rau lub regulator lub rooj zaum hauv lub valve, ua rau nws poob kev cai raug.
Fertigation injectorinstalls kawg nyob rau hauv ib ntus vim nws qhia chiv rau hauv huv, lim dej ntawm kev tswj siab. Txhim kho nws ua ntej lim yuav tso cai rau cov khoom siv chiv los thaiv cov lim. Txhim kho nws tom qab lub regulator yuav nthuav tawm lub injector kom muaj kev hloov pauv.
Table 2: Lim xaiv los ntawm qhov chaw dej
| Qhov Chaw Dej | Thawj Lim | Secondary Lim | Thaum siv |
| huv si municipal | Cov ntxaij lim dej (150 mesh) | Tsis tas li xav tau | Tsawg qis |
| Zoo dej | Sand media filter | Disc filter (120 mesh) | Sand/silt tam sim no |
| Ntog dej (pas / dej) | Sand media + hydrocyclone | Disc lim (120-150 mesh) | Hnyav sediment + organics |
| High algae / kab mob | Sand media (nrog chlorination) | Disc filter (150 mesh) | Biological load |
(Source: Rivulis Drip Irrigation Design Manual, Netafim Agronomy Guide)
Hydrocyclone separatorsraug pom zoo ua ntej ntawm cov xuab zeb media lim thaum kos los ntawm cov pas dej lossis cov dej ntws. Lawv tshem tawm cov xuab zeb thiab cov khoom hnyav mechanically (tsis muaj qhov xav tau rov qab) ua ntej dej mus txog cov lim xov xwm, txo cov xov xwm lim rov qab ntau zaus.
Xaiv cov regulators ntsuas rau koj lub hom phiaj siab thiab ntws ntau yam:
- Daim kab xev (8mil-15mil phab ntsa):8-15 PSI regulators
- Drip raj nrog siab-compensating emitters:15-30 PSI regulators
Regulators muaj qhov tsawg kawg nkaus thiab siab kawg ntws ntau yam. Lub regulator me me dhau lawm yuav tsis tswj kom raug; ib qho loj heev yuav tsis qhib kom zoo. Xyuas cov manufacturers specifications.
Lub fertigation injector yuav tsum tau nruab nruab nrab ntawm cov lim thib ob thiab cov kab tseem ceeb - tsis nyob nruab nrab ntawm cov dej thiab cov lim dej. Qhov chaw no ua kom cov chiv tau nkag mus rau hauv cov dej huv, lim dej ntawm qhov raug siab, thiab tiv thaiv cov chiv rov qab rau hauv koj qhov dej.
Nrog lub taub hau sib dhos, txav mus rau tso cov yeeb nkab network uas xa dej los ntawm koj qhov chaw tswj hwm mus rau txhua kab kab.
| Hom yeeb nkab | Pom zoo qhov tob | Sau ntawv |
| PVC lub ntsiab (Sch 40) | Yam tsawg kawg 12 " | Tiv thaiv kev khiav tsheb thiab Frost |
| PE submain | Nto los yog 6 "dav faus | PE yog hloov tau; UV- cov qib resistant tuaj yeem ntog - khiav |
| Drip daim kab xev laterals | Nto (ntawm los yog hauv qab mulch) | Tsis txhob faus daim kab xev tsis muaj SDI tsim |
Rau cov huab cua sov- thaj chaw muaj kev nyab xeeb, faus PVC hauv qab kab hauv zos. Tham nrog koj lub nroog qhov chaw ua haujlwm txuas ntxiv rau cov ntaub ntawv hauv zos qhov tob tob.
Kev sib koom ua ke kom zoo tiv thaiv qhov tsis ua haujlwm ntawm lub ntsiab lus tseem ceeb tshaj plaws: xau ntawm fittings.
Kauj ruam -los ntawm - kauj ruam:
- Txiav square- Siv lub tshuab txiav PVC lossis saw. Square txiav kom muaj kev sib cuag tag nrho.
- Deburr thiab chamfer- Tshem tawm sab hauv thiab sab nraud nrog cov cuab yeej deburring lossis cov ntaub ntawv. Chamfer sab ntug ~ 10-15 degree.
- huv- So cov yeeb nkab kawg thiab haum lub qhov (socket) nrog PVC primer. Tshem tawm cov av, roj, thiab cov av noo.
- Siv primer- Coated ob lub yeeb nkab sab nrauv thiab haum lub qhov (socket) sab hauv nrog ntshav PVC primer.
- Siv cov cement- Thaum primer tseem ntub dej (lossis tam sim ntawd tom qab), siv lub tsho nyias nyias ntawm PVC cement rau ob qhov chaw.
- Sib dhos- Ntxig cov yeeb nkab rau hauv haum nrog 1/4-tig twisting txav kom faib cov cement sib npaug. Tuav nyob rau hauv siab rau15 vib nas this.
- Kho- Tsis txhob cuam tshuam lossis siab - sim thaum lub sijhawm kho.
Kho Lub Sijhawm Table (PVC Solvent Joints):
| Txoj kab uas hla | Lub sij hawm tuav | Full Pressure Test |
| 1/2"–1-1/4" | 15 feeb | 2 teev |
| 1-1/2"–2" | 30 feeb | 4 hnu |
| 2-1/2 "thiab loj dua | 1 hnu | 6 hnu |
Submain ntev yog txwv los ntawm txoj kab nqes thiab kev hloov siab hloov pauv. Ntawm thaj chaw tiaj tus, kev sib txhuam poob yog koj qhov kev txhawj xeeb nkaus xwb. Ntawm qhov chaw siab tshaj, qhov siab hloov pauv ntxiv lossis tshem tawm qhov siab.
Table 3: Submain Maximum Ntev los ntawm txoj kab nqes
| Terrain Slope | Max Submain Length | Sau ntawv |
| Pav ca (<2% slope) | 80 m (260 ft) | Standard layout |
| 2-5%. | 50-60 m (165-200 ft) | Downhill seem poob siab |
| >5% nqes hav | Pleev nrog contours | Ntxiv rau -kab siab regulators |
Rau txoj kab nqes dua 5%, teeb tsa koj cov submains raws qhov siab contours es tsis yog khiav lawv ncaj nraim los yog nqes nqes. Qhov no tiv thaiv kev sib txawv ntau dhau ntawm qhov nruab nrab ntawm sab saum toj thiab hauv qab ntawm lub submain. Yog hais tias contour layout yog impractical, ntxiv siab -compensating drippers los yog ib - kab regulators.
Tseem ceeb:Tshem lub mainline thiab submain ua ntej txuas ib daim kab xev drip.
- Qhib tag nrho cov submain kawg
- Pressurize lub mainline
- Flow ntawm tag nrho ntws kom txog thaum dej ntws ntshiab (tsis muaj sediment, tsis muaj xim)
- Kaw submain xaus ib los ntawm ib qho thaum koj ua tiav txhua cheeb tsam
- Tsuas yog tom qab ntawdtxuas drip tape fittings
Qhov no tshem tawm cov khib nyiab ntawm kev tsim kho (pob zeb, PVC shavings, sawdust) uas yuav tuaj yeem cuam tshuam cov emitters tam sim ntawd.
Kev teeb tsa daim kab xev yog theem uas ua liaj ua teb- nplai tshuab feem ntau sib txawv ntawm cov khoom siv vaj. Cov txheej txheem tsim nyog txiav txim siab seb koj lub cev puas ua tiav 90% + emission uniformity lossis txhim kho thaj chaw qhuav uas txo cov qoob loo.
Mechanical tsosiv ib daim kab xev drip unwinder mounted rau ntawm ib tug toolbar qab lub txaj shaper los yog transplanter. Qhov no yog tus qauv rau kev ua haujlwm cog ntau tshaj 5 daim av. Kev teeb tsa tseem ceeb:
- Daim kab xev tension:Kho kom daim kab xev lays tiaj tsis ncab. Tshaj -tensioning thins daim kab xev thiab tsis muaj zog emitter bonding.
- Unwinder brake:Teem kom tsis txhob pub dawb -kiv, uas ua rau kinking.
- Kab cim:Calibrate kom phim koj emitter spacing.
Kev tuav tuavrau kev ua haujlwm me me lossis cov haujlwm tsis xwm yeem:
- Ua haujlwm los ntawm ib kawg ntawm daim teb mus rau lwm qhov
- Rub daim kab xev taut tab sis tsis ncab (5-7% slack yog siv tau rau thermal expansion)
- Tawm 1.5-2 m (5-6 ft) ntawm daim kab xev ntxiv ntawm ob lub qhov hluav taws xob thiab qhov hluav taws xob xaus rau kev sib txuas thiab kev hloov kho
- Lay nrog lubemitter qhov tig mus(indicator line tig up). Qhov no tiv thaiv cov hauv paus hniav los ntawm kev loj hlob mus rau hauv emitters los ntawm hauv qab no thiab ua kom yooj yim rau pom.
Qhov no yog qhov tseem ceeb tshaj plaws thiab tsis to taub qhov tshwj xeeb tshaj plaws hauv kev tsim dej drip. Khiav daim kab xev ntev dhau lawm ua rau lub siab poob qis uas tawm hauv qab dej kawg qhuav. Siv cov ntxhuav hauv qab no rau koj tus qauv tsim.
Table 4: Drip Tape Maximum Lateral Run Length (5/8 "thiab 7/8" inch, theem teb, 90% emission uniformity)
(Source: Oklahoma State University BAE-1511D, Rivulis T-Tape specifications)
| Emitter Spacing | Emitter Flow | Inlet Siab | Max Run (5/8" daim kab xev) |
| 12" | 0.22 TSI GPH | 8 PSI | 750ft ua |
| 12" | 0.45 GPH | 8 PSI | 500 ft |
| 24" | 0.34 GPH | 8 PSI | 672ft ua |
| 24" | 0.50 GPH | 8 PSI | 519ft ua |
| 36" | 0.50 GPH | 8 PSI | 672ft ua |
| 36" | 1.00 TSI GPH | 8 PSI | 427ft ua |
T- Daim kab xev (7/8 "inch, 10 PSI inlet):
| Emitter Spacing | Flow (GPM / 100ft) | Max khiav Length |
| 8" | 0.34 | 1,030 ft ib |
| 8" | 0.50 | 795ft ua |
| 12" | 0.22 | 1,350 ft ib |
| 12" | 0.34 | 1,030 ft ib |
| 12" | 0.45 | 865 ft |
Cov lej no suav tias yog qib teb.Rau txhua 1% ntawm txoj kab nqes nqes los ntawm qhov nkag, koj nce kwv yees li 0.43 PSI ntawm lub siab. Rau txhua 1% txoj kab nqes nce toj, koj poob tib yam. Ua qhov no rau hauv koj tus qauv tsim-tab sis ib txwm txheeb xyuas nrog lub ntsuas siab hauv thaj teb.
Rau feem ntau daim ntawv thov, tsim rau 90% emission uniformity (EU) es tsis txhob thawb mus rau qhov siab tshaj plaws khiav ntev. Lub hom phiaj 95% EU txhais tau tias tsim ntawm 80-85% ntawm qhov siab tshaj plaws khiav ntev kom suav nrog kev hloov pauv siab los ntawm kev sib txhuam poob, kev hloov siab, thiab kev tsim khoom sib txawv hauv emitter flow rate (± 10% yog tus qauv).
Thaum txhim kho drip daim kab xev hauv qab yas mulch:
- Daim kab xev1-2 cm hauv qab nocov av nto, tsis ncaj qha nyob rau hauv lub mulch zaj duab xis.
- Lub mulch-film-rau-kab kab xev cua sib txawv tsim ib qholens nyhuvuas tuaj yeem tsom lub hnub ci thiab yaj daim kab xev. faus nws hauv av tiv thaiv qhov no.
- Xwb, nteg daim kab xev ncaj qha rau ntawm cov av hauv qab cov mulch nkaus xwb yog tias siv UV- daim kab xev resistant (10 mil+) lossis yog tias kev ua haujlwm yog ib lub caij nkaus xwb.
Table 5: Drip Tape Phab Ntsa Thickness vs. Lifespan
(Tau qhov twg los: Drip Depot yuav phau ntawv qhia 2026, Rivulis khoom specifications)
| Phab ntsa Thickness | Cia siab rau Lifespan | Zoo tshaj rau |
| 5-6 mil | 1 lub caij | Short-season zaub ( lettuce, taum) |
| 8mil ua | 2-3 xyoos | Standard kab qoob loo |
| 10-12 mil | 2-4 xyoos | Kev siv ntau- caij nyoog |
| 15 miv | 5-10 xyoo | Perennials, orchards, subsurface drip irrigation (SDI) |
Yog tias koj cog qoob loo txhua xyoo thiab tshem cov kab xev thaum lub caij xaus, 5-8 mil daim kab xev yog tus nqi- zoo. Rau kev ruaj ntseg lossis ntau- xyoo kev teeb tsa, nqis peev hauv 10–15 mil daim kab xev.
Rau underground drip irrigation systems:
- Av compactionyog qhov tseem ceeb. Compacted av tsim txoj kev nyiam ntws uas hla cov hauv paus aav. Ua kev ntsuam xyuas infiltration ua ntej txhim kho SDI.
- Nruabnqus tsev vacuum li qubntawm cov ntsiab lus siab tshaj plaws ntawm txhua sab. Yog tsis muaj lawv, shutdown tsim suction uas rub av rau hauv emitters.
- Hauv paus intrusionkev pheej hmoo yog tiag tiag nyob rau hauv perennial qoob loo. Xav txog qhov siab-pab cov emitters nrog kev tiv thaiv-cov hauv paus hniav lossis cov tshuaj chlorine ib ntus.
- Txhajacetic acid (vinegar)ntawm 100-200 ppm txhua xyoo tuaj yeem cuam tshuam cov hauv paus kev loj hlob ze ntawm cov emitters.
Nrog rau daim kab xev nteg, koj txoj hauj lwm tom ntej yog txuas txhua sab mus rau lub submain thiab sealing tag nrho cov qhib xaus. Cov theem no txiav txim siab seb koj lub cev tuav lub siab lossis los ntshav hauv txhua qhov chaw.
1. Punch lub submain- Siv ib daim kab xev xuas nrig tshwj xeeb rau koj qhov haum rau qhov barbed rov qab. Siv qhov tsis ncaj ncees lawm punch loj yog qhov # 1 ua rau xau ntawm takeoff fittings.
| Barbed Back Diameter | Pom zoo Punch Size |
| 5/8 "(fits 5/8" daim kab xev) | 5/8 "Pum |
| 3/4 "(fits 7/8" daim kab xev) | 3/4 "Pum |
2. Punch perpendicularmus rau lub submain. Ib lub qhov slanted ua rau lub barb rub tawm nyob rau hauv siab.
3. Nruab lub grommet(密封圈) nyob rau hauv lub submain qhov. Lub grommet seals nruab nrab ntawm lub submain thiab barbed takeoff. Ua ntej txhim kho, ntxuav lub qhov thiab lub grommet. Siv cov dej me me - cov roj nplua nyeem yog tias xav tau.
4. Ntxig lub barbed haumrau hauv grommet. Nias kom ruaj kom txog thaum lub rooj zaum haum. Koj yuav tsum xav tias muaj kev tiv thaiv raws li qhov barb locks qab lub grommet lub nplhaib puab.
5. Txuas daim kab xev dripmus rau lub fitting lwm barb. Thawb daim kab xev tsawg kawg 2 ntiv tes rau ntawm qhov barb thiab ruaj ntseg nrog cov kab hlau stainless- tsav clamp.
Ob txoj kev lees txais:
Txoj kev 1 - Fold thiab clamp (kie-wrap method):
- 1. Quav daim kab xev kawg rov qab rau nws tus kheej 3-4 zaug
- 2. Tuav ib qhov ntev ntawm qhov loj dua - txoj kab uas hla (los yog folded hlau) hla lub quav
- 3. Ruaj ntseg nrog ib txoj hlua khi los yog stainless clamp
Txoj Kev 2 - Ntsia Hlau- ntawm lub hau kawg:
- 1. Quav daim kab xev kawg ib zaug
- 2. Xov lub hau kawg hla lub quav
- 3. Ntsia lub hau kom nruj
Ntsia hlau- ntawm lub kaus mom nrawm dua thiab txhim khu kev qha rau kev siv dua. Txoj kev fold-thiab-clamp txoj kev yog ib qho yooj yim tab sis tuaj yeem xau yog tias lub clamp loosens dhau sijhawm.
Table 6: Feem ntau Fitting Leaks thiab Solutions
| Cov tsos mob | Tej yam ua rau | Kev daws |
| Leak ncig grommet | Grommet tsis zaum / tsis ncaj ncees lawm loj | Tshem tawm, ntxuav, rov- rooj; hloov yog tawg |
| Leak ntawm barbed kev twb kev txuas | Daim kab xev tsis thawb deb txaus mus rau barb | Thawb daim kab xev ntxiv; ntxiv clamp |
| Leak ntawm lub cev haum | Kev sib tsoo; tshaj - nruj | Hloov haum |
| Drip daim kab xev tshuab tawm haum | Siab siab dhau lawm; kev sib txuas tsis zoo | Txheeb xyuas qhov ntsuas siab; re-clamp |
| Nruam drip tom kawg ntawm lateral | End cap tsis kaw | Reinstall lossis hloov lub hau kawg |
Theem 7: Flush thiab commission lub system
System commissioning yog qhov uas koj txheeb xyuas tias txhua yam koj tau teeb tsa ua tau zoo raws li tsim. Hla cov kauj ruam no txhais tau tias koj yuav tsis pom cov teeb meem kom txog thaum koj cov qoob loo qhia kev ntxhov siab.
Kauj Ruam -los ntawm -Step Flushing Protocol
1. Kaw tag nrho cov kaus mom kawgntawm laterals koj tab tom yuav sim.
2. Qhib qhov chaw valverau cheeb tsam koj tab tom commissioning.
3. Mus rau qhov kawgntawm lub lateral thiab tshem lub hau kawg.
4. Pressurize cheeb tsamlos ntawm kev qhib lub ntsiab khoom.
5. Tshem tawm txhua sabtus kheej ntawm tag nrho cov ntws mus txog rau thaum dej ntws tawm ntawm qhov qhib kawg.
6. Fais fab tuagthaj tsam.
7. Reinstall lub hau kawgthaum txoj kab tseem muaj zog (yooj yim los txheeb xyuas lub foob).
8. Rov ua duarau txhua cheeb tsam.
Koj qhov dej ntws tawm yuav tsum yog tsawg kawg1 FPS (ko taw ib pliag)kom muaj txiaj ntsig zoo ntawm cov av. Siv lub thoob xeem (Phase 1) los xyuas kom meej tias cov dej ntws tawm ntawm qhov kawg ntawm qhov kawg. Yog tias ntws tsawg dhau:
- Xyuas kom koj lub siab tswj lub siab raug teeb tsa kom raug
- Xyuas kom meej tias lub mainline thiab submain yog qhib tag nrho
- Tshawb xyuas cov qhov kaw ib nrab
Tom qab yaug thiab capping tag nrho cov laterals, pressurize lub system thiab ntsuas siab ntawm:
- Lub taub hau sib dhos(Upstream ntawm lub siab regulator)
- Lub inlet kawgntawm tus neeg sawv cev lateral
- Qhov hluav taws xob kawgntawm tib lub lateral (siv lub pitot raj los yog ntxig ib lub ntsuas)
Kev lees txais cov qauv:
- Lub siab ntawm lub lateral inlet yuav tsum phim koj lub siab tswj qhov chaw (± 1 PSI)
- Lub siab ntawm qhov hluav taws xob yuav tsum nyob hauv±10%ntawm lub inlet siab
- Yog tias qhov hluav taws xob siab tshaj 10% qis dua qhov nkag, koj qhov kev khiav sab nraud ntev dhau lawm, lossis kev sib txhuam poob ntau dhau.
Fertigation-Kev txhaj tshuaj ntawm cov chiv los ntawm koj qhov kev tso dej hauv dej- xa cov as-ham ncaj qha mus rau hauv paus cheeb tsam nrog kev ua haujlwm zoo kawg nkaus. Thaum teeb tsa kom raug, fertigation tuaj yeem txo cov chiv siv los ntawm 20-40% piv rau kev tshaj tawm daim ntawv thov thaum txhim kho qoob loo.
Table 7: Fertigation Injection Method Comparison
| Txoj kev | Precision | Flow Rate Range | Zoo tshaj rau |
| Venturi txhaj tshuaj | Nruab nrab | 0.5-10 GPM bypass | Me - mus rau - cov liaj teb nruab nrab |
| Siab sib txawv tank | Tsawg | Tsau piv (feem ntau 1:50 txog 1:200) | Yooj yim, qis - kev teeb tsa tu |
| Dosing twj tso kua mis (diaphragm) | Siab | Kho tau mL/min | Precision ua liaj ua teb, cov qoob loo sib txawv |
venturi injectorsyog qhov kev xaiv ntau tshaj plaws rau kev ua liaj ua teb -scale systems. Lawv yuav tsum tsis muaj hluav taws xob, txuas rau hauv kab ntawm lub voj voog bypass, thiab ua haujlwm nrog txhua tus nqi ntws hauv lawv qhov ntau. Kev lag luam tawm -tawm yog tias lawv haus 10-25% ntawm qhov system ntws rau kev hla, uas koj yuav tsum suav rau hauv koj cov kev suav suav.
Siab sib txawv tanksyog cov txheej txheem passive qhov twg cov tshuaj chiv tau tuav hauv lub tank thiab qhov system siab yuam nws mus rau hauv txoj kab dej. Yooj yim tab sis tsis meej- qhov kev txhaj tshuaj sib txawv raws li lub tank khoob thiab hloov siab.
Dosing twjmuab qhov siab tshaj plaws. Lawv txhaj tshuaj ntawm tus nqi calibrated mL / min tsis hais qhov system siab, tso cai rau kev noj zaub mov kom raug. Qhov zoo tshaj plaws rau kev ua haujlwm siv qhov sib txawv - tus nqi fertigation lossis loj hlob siab - cov qoob loo muaj txiaj ntsig uas cov khoom noj muaj txiaj ntsig ncaj qha cuam tshuam rau cov txiaj ntsig.
Nruab lub fertigation injectornruab nrab ntawm lub lim thib ob thiab lub mainline, raws li tau hais hauv Theem 3. Lub cev txhaj tshuaj yuav tsum yog:
- Downstream ntawm lub siab regulator (ua haujlwm ntawm kev ua haujlwm siab, tsis siab siab)
- Nruab rau ntawm lub voj bypass yog li nws tuaj yeem raug cais tawm rau kev saib xyuas
- Positioned thiaj li chiv tov ntws los ntawm nws nyob rau hauv qhov tseeb kev taw qhia (xyuas lub xub ntawm lub cev)
Rau Venturi injectors thiab siab sib txawv tso tsheb hlau luam, qhov kev txhaj tshuaj piv txiav txim siab npaum li cas cov tshuaj tov yog txhaj tshuaj txheeb ze rau cov dej hauv dej.
Basic formula:
Txhaj Ratio=Irrigation Flow (GPM) ÷ Injector Output (GPM)
Piv txwv:Koj qhov system khiav ntawm 20 GPM. Koj lub Venturi injector outputs 0.5 GPM ntawm chiv tov.
Txhaj Ratio=20 ÷ 0.5=40:1
Qhov no txhais tau hais tias rau txhua 40 nkas loos dej irrigation, 1 nkas loos ntawm concentrated chiv tov yog txhaj. Yog tias koj cov chiv concentrate yog ntawm 100 lbs N / gallon, tus nqi zoo ntawm cov nroj tsuag yog:
100 ÷ 40=2.5 lbs N rau 100 nkas loos dej
Tswv yim tswv yim:Pib conservative. Hauv qab -fertilizing yog kho tau yooj yim ntawm cov dej tom ntej. Tshaj -fertilizing los ntawm lub cev tuaj yeem ua rau ntsev ntxiv thiab qoob loo hlawv.
Tsis yog tag nrho cov chiv yog sib xws nrog cov drip systems. Cov cai tseem ceeb:
| Tau tshaj | Tsis Compatible (yuav clog emitters) |
| Urea, ammonium nitrate | Calcium nitrate (precipitates nrog sulfates) |
| Potassium chloride | Calcium sulfate (gypsum) |
| Phosphoric acid (tus nqi qis) | Magnesium sulfate hauv dej tawv |
| Feem ntau chelated micronutrients | Ncaj superphosphates (high sediment) |
Txoj cai tseem ceeb:Tsis txhob sib tov calcium -raws li chiv nrog sulfate-raws li chiv nyob rau hauv tib lub tank. Qhov no tsim calcium sulfate precipitate uas yuav txhaws txhua emitter hauv koj lub cev.
Rau cov ncauj lus kom ntxaws fertigation chemistry, txhaj tshuaj suav, thiab qoob loo-cov kev pabcuam tshwj xeeb, saib peb cov lus qhia ua tiav ntawm/info/fertigation-cov lus qhia.
Automation transforms ib phau ntawv drip system rau hauv cov cuab yeej irrigation precision. Qib tswj txoj cai nyob ntawm koj qhov kev ua haujlwm loj, qoob loo tus nqi, thiab pob nyiaj siv.
Qib 1 - Lub Sijhawm Timer ($30–$80):
Qhib thiab kaw koj cheeb tsam valve ntawm lub sijhawm teem. Yooj yim thiab txhim khu kev qha. Kev txwv: khiav tsis hais huab cua, tsis muaj kev tawm tswv yim.
Theem 2 - Ntse Controller nrog Huab Cua Sensor ($150–$400):
Ntxiv cov nag sensors, av noo sensors, los yog internet -cov ntaub ntawv huab cua txuas. Tsis siv neeg ncua dej thaum lub sij hawm thiab tom qab los nag. Qee cov qauv kho lub sijhawm ua haujlwm raws li evapotranspiration (ET) cov ntaub ntawv.
Qib 3 - Av Moisture Sensor + Weather Station ($500–$1,500):
Cov lus teb tag nrho- kev tswj lub voj voog. Sensors nyob rau hauv lub hauv paus cheeb tsam ntsuas qhov tseeb av noo noo. Tus maub los irrigates tsuas yog thaum noo noo poob qis dua qhov chaw pib, tsis hais lub sijhawm teem caij nyoog. Qib no tuaj yeem txo kev siv dej los ntawm 25–50% piv rau lub sijhawm- raws li kev teem caij.
Rau cov kab ke nrog 4+ ib cheeb tsam, tsis txhob khiav txhua thaj chaw ib txhij yog tias koj qhov peev xwm ntws tsawg. Es tsis txhob, ib ntus zones:
Piv txwv - 8 zones, 8 GPM muaj, 1.5 GPM ib cheeb tsam:
| Lub Sijhawm Thaiv | Zones khiav | Total Flow |
| 12:00–12:45 | Zones 1, 2, 3, 4 | 6.0gpm ua |
| 12:45–13:30 | Zos 5, 6, 7, 8 | 6.0gpm ua |
Khiav 5 thaj tsam ntawm 1.5 GPM=7.5 GPM, uas tshaj koj lub peev xwm 8 GPM (nco ntsoov koj xav tau lub taub hau rau lub kaw lus). Kev sib kis mus rau 4 thaj chaw ntawm ib lub sijhawm muab lub taub hau rau lub kaw lus nws tus kheej.
Rau AC-powered zone li qub (24V AC solenoid li qub yog tus qauv):
- Sivirrigation-cov xov hlau tshwj xeebntsuas rau faus ncaj qha
- Yam tsawg kawg nkaus hlau ntsuas: 18 AWG rau kev khiav qis dua 500 ft; 16 AWG 500-1,000 ft
- Waterproof tag nrho cov xaim txuas nrog silicone-cov txiv ntseej los yog gel-cov khoom siv sib txuas
- Txoj kev xaim hauv PVC conduit qhov twg nthuav tawm saum av
- Nruab ibxob ntesntawm tus maub los yog tias koj cheeb tsam ntsib thunderstorms
Rau cov roj teeb - powered controllers (nruj rau cov chaw taws teeb uas tsis muaj fais fab):
- Siv 9V los yog DC -siv solenoid li qub
- Hloov cov roj teeb thaum pib ntawm txhua lub caij
- Xav txog hnub ci -powered controllers rau kev txhim kho mus tas li
Txawm tias qhov zoo tshaj plaws - nruab drip systems xav tau kev saib xyuas tsis tu ncua. Cov lus kuaj mob hauv qab no suav nrog cov teeb meem feem ntau ua liaj ua teb- cov neeg lag luam nplai ntsib.
Table 8: Cov Teebmeem Drip Feem Ntau Cov Teebmeem thiab Kev daws teeb meem
| Cov tsos mob | Tej yam ua rau | Txoj Cai Kho |
| Cov chaw qhuav nyob rau hauv ib qho chaw ntub dej | Clogged emitter / twisted daim kab xev / kink nyob rau hauv daim kab xev | Tshem tawm sab nraud; hloov daim kab xev; ncaj kinks |
| Txau dej los yog pos huab los ntawm cov emitters | Siab dhau heev / lub cev puas tsuaj rau daim kab xev | Txheeb xyuas qhov siab nrog ntsuas; daim kab xev puas los yog hloov seem |
| Tag nrho cheeb tsam muaj qis los yog tsis muaj ntws | Kaw valve / clogged lim / loj kab tawg | Tshawb xyuas valve; ntxuav / hloov cov khoom lim; txoj kab taug kev kom pom qhov xau |
| Kev ywg dej ntawm cov nroj tsuag sab hauv | Ploj los yog ua tsis tiav qhov kawg cap / ntau dhau txoj kab nqes nqes | Nruab / hloov lub hau kawg; txheeb xyuas submain raws li contours |
| Av pom hauv daim kab xev thaum pib | Suck-rov qab thaum kaw (lub tshuab nqus tsev) / qhib kawg thaum lub sijhawm tawm - teev | Nruab cua / nqus pa li qub; kaw tag nrho qhib xaus nrog lub kaus mom |
| Flow diminishes zuj zus mus rau sab | Lateral khiav dhau ntev / qis inlet siab / ib nrab thaiv | Ntsuas qhov ntev khiav; txheeb xyuas qhov siab; ua qhov system flush |
| Leaks ntawm takeoff fittings | Tsis ncaj punch loj / grommet tsis zaum / haum tsis tag nrho tso | Siv cov chaw tsim khoom- tshwj xeeb punch; tshem tawm thiab rov- lub rooj zaum grommet; tag nrho ntxig haum thiab clamp |
| Lim siab poob nce sai heev | Media lim xav tau rov qab ntxuav / disc lim cartridges clogged | Backwash xuab zeb media raws li cov lus qhia chaw tsim khoom; disassemble thiab huv si disc lim cartridges |
| Cov emitters xau ntawm cov voj voog dej | Kev puas tsuaj diaphragm nyob rau hauv siab-compensating emitter / tsis ua hauj lwm valve | cais thaj chaw; hloov emitters los yog kho / hloov chaw valve |
Txhua hli (thaum lub caij loj hlob):
- Flush laterals (qhib kawg lub kaus mom, yaug ntawm tag nrho ntws rau 2-3 feeb ib sab)
- Tshawb xyuas thiab ntxuav cov lim dej (ntxuav cov xuab zeb rov qab; ntxuav lossis hloov cov cartridges disc)
- Txheeb xyuas cov ntawv nyeem siab ntawm lub taub hau thiab teb
- Taug kev txhua sab rau pom kev puas tsuaj lossis xau
Peb lub hlis twg:
- Tshem tawm thiab ntxuav tag nrho cov lim dej kom huv si
- Tshawb xyuas txhua qhov fittings rau hnav, tawg, lossis xoob
- Kuaj thaj tsam valve ua haujlwm (phau ntawv thiab tsis siv neeg)
- Ua qhov system uniformity audit: tso cov kaus poom raws tus neeg sawv cev rau sab; piv cov nqi ntws ntawm inlet vs. nruab nrab -khiav vs. qhov hluav taws xob
Hnub Kawg:
- Ntxuav tag nrho lub cev nrog dej huv
- Tshem tag nrho cov kav dej thiab cov khoom uas tuaj yeem khov
- Tshem tawm thiab yob li daim kab xev yog siv daim kab xev raws caij nyoog (5-8 mil)
- Yog tias tso daim kab xev rau hauv qhov chaw (10 mil +), ua kom lub cev muaj zog me ntsis rau lub caij ntuj no kom pom cov xau
- Tshem cov roj teeb ntawm cov tswj; khaws cia hauv huab cua-tswj qhov chaw
Cov dej khov hauv cov kav dej ua kom puas tsuaj, tawg PVC thiab sib cais PE. Ua kom tiav cov kauj ruam winterization:
- Tshem tawm cov dejthiab tso qhov system siab
- Qhib tag nrho cov dej ntws tawmthiab cov kaus mom kawg
- Tshuab tawmCov dej ntxiv nrog cov cua compressed (50 PSI siab tshaj plaws rau cov ntaub nplaum; siab dua rau PVC mainlines)
- Tshem tawm thiab khaws ciatag nrho cov regulators siab, injectors, thiab gauges sab hauv tsev
- Dejchiv tank thiab huv residue
- Rwb thaiv tsevsaum toj no - cov kav dej hauv av nrog cov yeeb nkab ua npuas dej thaiv hauv thaj chaw uas muaj te me me
- Rau SDI systems:Tuav lub siab me ntsis (2-3 PSI) thaum lub caij ntuj no los tiv thaiv cov av nqus rov qab mus rau sab nraud
Kev tsim thiab txhim kho kev ua liaj ua teb kom zoo-txheej txheem drip irrigation system muab cov dej tsis sib xws, kev ua kom muaj tseeb, thiab txuag dej tseem ceeb-feem ntau 30-50% piv rau cov tshuab siv nyiaj siv ua haujlwm. Cov txheej txheem 10-theem tau teev tseg hauv phau ntawv qhia no yog ua ntu zus: txhua theem nyob ntawm qhov dhau los. Kev hla cov kauj ruam, tshwj xeeb tshaj yog kev kuaj dej kom raug, lim kev teeb tsa, thiab kev tso dej tawm hauv lub cev, yog qhov uas feem ntau tsis ua tiav.
Yog tias koj tab tom npaj ib qho system rau ntau tshaj 10 ev kawj lossis loj hlob siab - cov qoob loo tshwj xeeb, nqis peev hauv kev sib tham txog kev tsim dej hauv dej. Tus nqi tsim nyog (feem ntau yog $ 500– $ 2,000 rau kev ua liaj ua teb- scale plan) them rau nws tus kheej hauv kev zam cov khoom ua yuam kev, txo kev saib xyuas, thiab kho cov qoob loo kom zoo nyob rau thawj ib mus rau ob lub caij.
