Kev ceev faj rau kev siv fungicide

Cov lus qhia tshuaj tua kab feem ntau muab cov lus pom zoo, uas tuaj yeem ua raws. Txawm li cas los xij, nws yog qhov zoo tshaj plaws los siv cov tshuaj fungicides raws li cov lus pom zoo los ntawm cov neeg saib xyuas kev tiv thaiv hauv zos tom qab kev sim ua tau zoo. Txo cov concentrations thaum lub caij ntuj sov qhuav los yog kub kom tsis txhob muaj phytotoxicity. Thib ob, xyuam xim rau lub sijhawm thiab zaus ntawm daim ntawv thov. Mastering lub sij hawm ntawm kev txau yog qhov tseem ceeb rau kev nkag siab txog tus kab mob qhov tshwm sim thiab cov qauv kev loj hlob, ua kev kwv yees kab mob, los yog npaj rau daim ntawv thov fungicide raws li cov chaw tiv thaiv cog hauv zos. Feem ntau, cov tshuaj tua kab mob fungicide yog ua tiav thaum ntxov ntawm cov kab mob, xws li nplej blast, tshwj xeeb tshaj yog nyob rau hauv huab cua kub thaum nplej blasting sai sai thiab yuav tsum tau txau tam sim ntawd. Cov txiv laum huab xeeb nplooj nthuav dav qeeb dua; tsis txhob tsuag thaum pib ntawm cov tsos mob, thiab yeej tsis ua ntej. Txau tsuas yog tom qab cov tsos mob tau tsim muaj qee yam kev txhim kho. Txau tam sim ntawd thaum huab cua zoo rau kev loj hlob sai; Qee zaum, tshuaj tsuag yog tsim nyog txawm tias thaum lub teeb drizzle los tswj tus kab mob. Lub sij hawm ntawm kev siv tshuaj tua kab tsis yog nyob ntawm tus kab mob tus qauv kev loj hlob nkaus xwb tab sis kuj nyob rau ntawm cov qoob loo txoj kev loj hlob, vim muaj ntau yam kab mob txuas rau cov theem kev loj hlob. Tsis tas li ntawd, nws yog ib qho tseem ceeb uas yuav tau xav txog kev cog qoob loo rau cov kab mob fungicides ntawm txhua theem kev loj hlob los tiv thaiv phytotoxicity. Cov kab mob nroj tsuag feem ntau tshwm sim dhau sijhawm, thiab ntau daim ntawv thov ntawm fungicides tsis tshua muaj txaus los daws qhov teeb meem hauv ib qho mus. Tus naj npawb ntawm cov ntawv thov yog nyob ntawm cov kab mob rov ua dua tshiab, cov nyhuv seem ntawm cov tshuaj tua kab mob, thiab cov xwm txheej huab cua xws li lub teeb, kub, thiab dej nag. Seedling disinfection: Noob soaking yuav tsum tau siv emulsions thiab kev daws, tsis yog ncua kev kawm ntawv, thiab wettable hmoov yuav tsum tsis txhob siv. Tus yuam sij rau noob soaking yog qhov concentration ntawm cov tshuaj tua kab thiab lub sij hawm soaking; Kev ua haujlwm tsis raug tuaj yeem ua rau tsis muaj menyuam tsis taus lossis phytotoxicity. Lwm yam xws li qhov kub thiab txias, hom noob, thiab qhov chaw ntawm cov kab mob kuj cuam tshuam rau cov nyhuv soaking. Feem ntau, thaum cov noob hom, qhov kub thiab txias, thiab hom tshuaj tua kab raug txiav txim siab, cov tshuaj tua kab concentration thiab lub sij hawm ntub dej tuaj yeem sib koom ua ke; ib tug ntau dua concentration tso cai rau lub sij hawm ntev soaking. Yog hais tias tus kab mob nyob tob rau hauv cov noob los yog lub tsho tiv no ntawm lub noob yog ib qho nyuaj, lub sij hawm soaking yuav tsim nyog ncua; yog tias qhov kub thiab txias, lub sij hawm soaking tuaj yeem ua kom luv luv. Ob lub noob thiab tshuaj tua kab yuav tsum tau qhuav ua ntej kev kho cov noob; txwv tsis pub, kev kho tsis sib xws yuav tshwm sim, ua rau phytotoxicity thiab cuam tshuam rau tus nqi germination. Tus nqi ntawm cov tshuaj tua kab siv yog feem ntau 0.2% mus rau 0.5% ntawm cov noob hnyav. Thaum kho cov noob, cov tshuaj tua kab thiab cov noob yuav tsum tau ntxiv rau hauv 3 mus rau 4 pawg, thiab tom qab ntawd lub thawv yuav tsum tau tig kom tsim nyog los xyuas kom meej tias sib tov. Nrog rau qhov tshwm sim ntawm cov kab mob fungicides, txoj kev kho cov noob tshiab tau tshwm sim -kev kho ntub dej. Qhov no suav nrog moistening cov hmoov tshuaj tua kab nrog dej me me thiab tom qab ntawd kho cov noob, lossis sib tov cov hmoov qhuav qhuav rau cov noob ntub, cia cov hmoov ua raws cov noob saum npoo. Tom qab sowing, cov tshuaj tua kab maj mam dissolves thiab absorbed rau hauv cov nroj tsuag thiab thauj upwards. Rau cov av-yug kab mob xws li paj rwb wilt thiab dib wilt, ntxiv rau cov noob soaking los yog kev kho mob, av tshuaj tua kab mob kuj siv tau rau kev tswj. Kev tua kab mob hauv av ua ntej yuav tsum xaiv cov tshuaj fungicide tsim nyog raws li hom kab mob, thiab tom qab ntawd xaiv txoj kev kho av tsim nyog raws li cov khoom siv physicochemical ntawm fungicide thiab cov av qauv thiab cov khoom. Irrigation yog haum rau dej -soluble fungicides. Tom qab kho cov fungicide mus rau qhov tsim nyog concentration, kwv yees li 5-10 kg ntawm kev daws yog siv rau ib square meter ntawm av. Thaum cov av qhuav heev, qhov kev daws teeb meem qis dua tuaj yeem siv tau, nrog rau cov dej ntau ntxiv; Thaum cov av noo, muaj ntau dua concentration nrog ib tug me me ntim yuav siv tau. Rau fungicides nrog siab vapor siab, daim ntawv thov tuaj yeem ua los ntawm plowing hauv qab lossis furrows. Cov hmoov los yog tov yog sib npaug zos rau hauv qab ntawm furrow ntawm thawj plowing, thiab ces them nrog av tig los ntawm lub thib ob plow. Txoj kev no tsis haum rau cov av nplaum hnyav dhau. Xwb, cov hmoov los yog tshuaj tuaj yeem siv rau hauv av thiab tam sim ntawd tig mus rau faus cov fungicide hauv av.