Vim li cas Drip Daim kab xev xaiv qhov tseem ceeb rau Soybean Production?
Soybean cov qoob loo yog cov rhiab heev rau cov dej ntxhov siab thaum lub sij hawm tseem ceeb ntawm kev loj hlob. Kev tshawb fawb tau lees paub tias kev ntxhov siab hauv dej thaum lub sij hawm tawg paj thiab pods tuaj yeem txo cov yields los ntawm 20-40%. Cov kev siv dej ib txwm siv xws li qhov chaw pivots ua tiav tsuas yog 75-85% kev ua haujlwm tau zoo.Drip irrigation systemsxa 85-95% efficiency, txo cov dej noj los ntawm 30-50% thaum tswj los yog nce yield. Qhov sib txawv ntawm lub caij nyoog tau txais txiaj ntsig thiab tsis muaj txiaj ntsig zoo feem ntau los ntawm kev ua dej hauv dej thaum lub sijhawm R3-R6. Xaiv qhov tseeb drip daim kab xev tsis yog lub hauv paus ntawm qhov precision.
Vim li cas Drip Tape Parameters Tsis yog -Tshaj tawm rau Soybean Success?
- Uniformity xav tau tshaj lwm cov qoob loo: Unlike cereals that can tolerate 10-15% variation in water application, soybeans show measurable yield loss with >5% uniformity variation thaum R3-R6.
- Hauv paus cheeb tsam ntim: Soybean roots concentrate nyob rau sab saum toj 12-18 ntiv tes ntawm cov av, yuav tsum tau tso dej ncaj rau hauv cheeb tsam txwv no. Tshaj - dej leaches tshaj hauv paus cheeb tsam; under-irrigation yoojyim ib feem ntawm lub hauv paus system qhuav.
- Nodulation rhiab heev: Soybean's nitrogen- kho symbiosis nrog cov kab mob Bradyrhizobium xav tau cov av noo tab sis aerobic av. Waterlogging los yog drought ob leeg cuam tshuam nodule muaj nuj nqi, txo nitrogen fixation los ntawm 40-70%.
Core Drip Tape Parameters rau Soybean
- Kev lag luam tus qauv qhia emitter spacing Tsawg dua los yog sib npaug li 30 cm raws lateral thiab lateral spacing Tsawg tshaj los yog sib npaug rau 30 cm rau horticultural qoob loo. Kho soybean spacing raws li av hydraulic zog.
- Rau soybeans cog rau hauv 30-inch kab, 12-nti emitter spacing feem ntau muab cov dej txaus txaus rau hauv cov av nruab nrab-textured. Cov av xuab zeb yuav tsum tau nyob ze dua (6-8 ntiv tes) txhawm rau kom muaj kev pov hwm txaus.
- ib 8mildaim kab xevmuab kev ua tau zoo txaus rau ib zaug - soybean ntau lawm rau ntawm cov xuab zeb loam lossis cov av loam av. Lub 15-mil hnyav version tiv taus cov av pob zeb thiab tso cai rau 2-3 lub caij nyoog thaum khaws cia thiab khaws cia kom zoo.
- Siab -compensating (PC) emitterstswj kev khiav dej num raws li kev hloov pauv siab ntawm 10-40 psi, qhov tseem ceeb rau thaj chaw nrog kev hloov pauv siab tshaj 5 taw lossis sab nraub qaum ntev dua 300 ko taw. Kev sim ua pov thawj pom tau tias 12-18 Bu/A cov txiaj ntsig sib txawv ntawm thaj chaw siab thiab tsis tshua muaj siab nyob rau hauv tsis yog-PC dov-field installations-tag nrho tiv thaiv nrog PC daim kab xev.
Kab Kab Kev Sib Txuas
Lateral Placement by Row Spacing
Soybean kab sib nrug (feem ntau 15, 20, lossis 30 ntiv tes hauv cheeb tsam loj ntau lawm) txiav txim siab qhov kev tso kawm sab nraud.Rau 30-nti kab, tso ib sab rau ib kab, nyob nruab nrab ntawm kab. Rau 15-20 nti kab, alternating kab muab kev pab txaus thaum av tso cai rau 12-18 nti kab rov tav wetting txoj kab uas hla.
Cog Qauv Hloov Kho
Kev tshawb fawb los ntawm Tuam Tshoj sab qaum teb lub caij nplooj ntoos hlav soybean cheeb tsam qhia tau hais tias dav - txaj nqaim- kab qauv (120cm txaj nrog 4 kab) ua ke nrog cov kab xev tso rau hauv cov kab nqaim ua tiav 316.8 kg / mu yields- cov ntaub ntawv hauv cheeb tsam. Qhov kev teeb tsa no ua kom cov nroj tsuag ntom ntom ntawm 2,000-3,000 nroj tsuag ib mu thaum tswj kev xa dej kom meej.
Irrigation Scheduling by Soybean Growth Stage
Soybeans xav tau kwv yees li ntawm 20-26 ntiv tes dej thaum lub caij loj hlob, nrog rau qhov kev xav tau siab tshaj plaws tshwm sim thaum lub sij hawm R1 txog R5 theem kev loj hlob.
| Kev loj hlob theem | Hnub tom qab cog | Xav tau dej txhua hnub | Irrigation Interval |
| VE -VC (Emergence) | 0-21 | 0.02-0.10" / hnub | Txhua 2-3 hnub |
| V1-V6 (Vegetative) | 21-55 | 0.10-0.22 "/hnub | Txhua hnub yog tias xav tau |
| R1-R2 (Bloom) | 55-70 | 0.22-0.25 "/hnub | Txhua hnub |
| R3-R4 (Podset) | 70-90 | 0.25-0.30 "/hnub | Txhua hnub |
| R5-R6 (Cov noob sau) | 90-120 | 0.30-0.25 "/hnub | Txhua hnub |
| R7-R8 (Maturity) | 120-140 | 0.25-0.15 "/hnub | Raws li xav tau |
Thaum lub sij hawm tseem ceeb R3-R6 kev ua me nyuam, cov taum pauv xav tau 0.25-0.35 ntiv tes txhua hnub. Cov av xuab zeb yuav xav tau 2-3 pulses ib hnub twg (45-90 feeb txhua), thaum cov av hnyav dua dej ib zaug ib hnub lossis txhua hnub nrog lub sijhawm khiav ntev (4-6 teev).
Daim ntawv thov tus nqi suav
Formula:
Daim ntawv thov tus nqi (nti / teev)=231 × Dripper Flow Rate (GPH) ÷ (Line Spacing (inch) × Dripper Spacing (inch))
Tsim cov tshuab kom tau raws li cov qoob loo evapotranspiration (ET) thaum siv luv luv, nquag irrigation pulses uas tuav ib ntus wetted hauv paus cheeb tsam 20-30 cm tob.
Cov lus pom zoo Fertigation
Khoom noj khoom haus xav tau los ntawm Yield Target
| Yield Lub Hom Phiaj | N (lbs/Ac) | P₂O₅ (lbs/Ac) | K₂O (lbs/Ac) |
|---|---|---|---|
| 40-50 Ib | 20-30 | 40-60 | 30-50 |
| 60-80 Ib | 30-50 | 80 | 160 |
| 80-100+ Bu/A | 50-70 | 100-120 | 180-200 |
Rau 60-80 Bu/A yield target: Siv 50 lbs/Ac P₂O₅ thiab 100 lbs/Ac K₂O ua ntej cog; fertigate 30 lbs / Ac P₂O₅ thiab 60 lbs / Ac K₂O thaum lub caij loj hlob. Rau siab yields, thov 25-30 lbs / Ac N los ntawm podding mus rau noob sau.
Fertigation Timing
| Kev loj hlob theem | P₂O₅ (lbs/Ac) | K₂O (lbs/Ac) |
|---|---|---|
| V3-V6 (Vegetative) | 6 | 8 |
| V3-V6 (Vegetative) | 6 | 8 |
| V3-V6 (Vegetative) | 6 | 8 |
| V3-V6 (Vegetative) | 6 | 8 |
Faib fertigation rau hauv 3-4 daim ntawv thov thaum lub sij hawm tseem ceeb heev es tsis yog ib daim ntawv thov hnyav. Tsis txhob tso dej ntau tshaj 2.0 teev rau ib daim ntawv thov. Yog xav tau, faib rau ob lossis peb daim ntawv thov.
Kev xav txog micronutrient
Boron thiab manganese yog qhov tseem ceeb rau cov taum mog nodulation thiab tsim cov protein. Hauv cov av xuab zeb, siv 0.5 lbs / Ac B thiab 6-10 lbs / Ac Mn thaum tawg los ntawm fertigation.