Core Mitigation Measures for Drought Resistance in Spring Crops

Drought kev nyuaj siab nyob rau hauv lub caij nplooj ntoos hlav qoob loo yuav mitigated los ntawm ib tug tag nrho suite ntawm kev ntsuas, nrog rau scientific irrigation, noo noo-conserving mulching, rational fertilization, thiab siv cov nroj tsuag kev loj hlob regulators. Ntawm cov no, kev siv cov nroj tsuag kev loj hlob regulators sawv yog ib qho ntawm cov kev qhia tseem ceeb rau kev txhim kho cov qoob loo lub hauv paus ntawm drought tsis kam.

I. Core Mitigation Measures for Drought Resistance in Spring Crops

1. Kev tshawb fawb thiab dej txuag dej
Ua ntej yuav tsum tau txais kev ua haujlwm tau zoo, txuag dej-xws li cov dej ntws thiab micro-sprinkler irrigation-thaum zam kev siv dej nyab ib txwm muaj.
Teem caij irrigation thaum sawv ntxov los yog yav tsaus ntuj teev kom txo cov dej evaporative tsawg.
Xyuas kom muaj dej txaus thaum lub sijhawm loj hlob tseem ceeb thaum cov dej xav tau siab tshaj plaws: tshwj xeeb tshaj yog, lub sijhawm sib koom ua ke-rau-cov nplej-sau rau cov nplej, thiab lub sijhawm sib koom ua ke rau pob kws.
Mulching los tiv thaiv evaporation thiab txuag dej noo

2. Txhawb kev siv cov yas zaj duab xis mulching thiab straw mulching (ntawm ib lub thickness ntawm 5-8 cm) kom zoo txo ​​cov av noo noo evaporation thiab txhim khu lub teb cov dej tuav.
Rau cov qoob loo xws li qos yaj ywm thiab zaub, muab cov yas zaj duab xis mulching nrog micro-irrigation systems los siv "sub-mulch drip irrigation."
Inter-tillage rau Loosen Av thiab cuam tshuam Capillary Action
Thaum ntxov caij nplooj ntoos hlav inter-tillage cais cov capillary raws nyob rau hauv cov av txheej txheej, yog li inhibiting upward zog thiab evaporation ntawm noo noo, thaum tib lub sij hawm warming cov av thiab stimulating paus kev loj hlob.

3. Foliar Fertilization los txhim kho kev nyuaj siab
Siv foliar chiv - xws li monopotassium phosphate, alginic acid, thiab fulvic acid - los ntawm kev txau kom nce cellular osmotic siab, ncua cov nplooj senescence, thiab txhawb drought tsis kam.


II. Pom zoo cog kev loj hlob Regulators thiab lawv cov dej num
Cov kev tswj hwm hauv qab no tuaj yeem txhim kho cov qoob loo drought tsis kam thiab tau txais dav siv rau hauv cov qoob loo xws li nplej, pob kws, thiab ntau yam zaub:

1. Brassinolide
Lub luag haujlwm tseem ceeb ntawm Brassinolide: tswj hwm hormonal tshuav, txhim kho cov duab ua kom zoo nkauj, txo cov kev ntxhov siab vim kev ntxhov siab, thiab ncua kev laus ntxov ntxov.
Cov qoob loo pom zoo: nplej, pob kws, thiab zaub.
Daim Ntawv Thov Sijhawm thiab Txoj Kev: Thov rau lub sijhawm pib-rau-paj thiab cov qoob loo sau qoob loo, thiab thaum lub sijhawm sib koom ua ke rau pob kws. Siv cov tshuaj tsuag foliar siv sib tov ntawm 10 ml / acre ntawm 0.01% Brassinolide aqueous tov ntxiv 30-50 g ntawm monopotassium phosphate; rov ua daim ntawv thov 1-2 zaug ntawm lub sijhawm 7-10 hnub.

2. Fulvic Acid / Mineral-derived Potassium Fulvate
Cov txiaj ntsig tseem ceeb: txo qis stomatal aperture, txo qis tus nqi transpiration, thiab txhawb kev loj hlob hauv paus system.
Cov qoob loo pom zoo: nplej, pob kws, qos yaj ywm.
Daim Ntawv Thov Sijhawm thiab Txoj Kev: Siv cov tshuaj tsuag foliar ntawm tus nqi ntawm 30-50 g / acre thaum muaj xwm txheej drought; tuaj yeem sib xyaw nrog Monopotassium Phosphate los txhim kho cov dej tuav.

3. S-Abscisic Acid (S-ABA) / Chitosan Oligosaccharide
Cov txiaj ntsig tseem ceeb: Ua kom cov nroj tsuag endogenous stress-resistance genes, yog li txhim kho drought kam rau ua thiab tiv thaiv kab mob.
Cov qoob loo pom zoo: Txiv hmab txiv ntoo thiab zaub, tshuaj ntsuab.
Daim Ntawv Thov Sijhawm Sijhawm thiab Txoj Kev: Siv cov tshuaj tsuag thaum lub sijhawm yub los yog thaum muaj kev ceeb toom txog kev nyab xeeb los txhawb cov nroj tsuag kev ntxhov siab.

4. Monopotassium Phosphate (Functional Regulator)
Cov txiaj ntsig tseem ceeb: Ntxiv phosphorus thiab potassium sai sai, txhim kho cellular vitality, thiab txhim kho kev ntxhov siab.
Cov qoob loo pom zoo: Tag nrho cov qoob loo.
Daim Ntawv Thov Sijhawm thiab Txoj Kev: Siv cov tshuaj tsuag foliar siv 0.2% - 0.3% kev daws thaum lub sijhawm loj hlob tseem ceeb (piv txwv li, nplej nplej-sau theem, pob kws loj-tshaj theem).