Nyob rau hauv xyoo tas los no, qhov tshwm sim ntawm rapeseed dawb xeb tau kuj siab, cuam tshuam rau qhov zoo ntawm rapeseed.
Rapeseed dawb xeb tuaj yeem cuam tshuam tag nrho cov kab mob saum toj no hauv av thoob plaws lub sijhawm loj hlob ntawm kev ua phem, feem ntau ua rau cov nplooj thiab stems puas. Thaum cov nplooj yog thawj kab mob, me me lub teeb ntsuab me ntsis nrog ib tug daj halo yuav tshwm nyob rau hauv pem hauv ntej ntawm nplooj, uas maj mam tig daj mus rau hauv lub voj voog. Cov xim dawb zoo li nti yuav tshwm rau tom qab ntawm nplooj. Thaum cov caws pliav tawg, cov hmoov dawb yuav tawm. Nyob rau hauv cov xwm txheej hnyav, tus kab mob Nplooj tig daj thiab poob tawm. Sab saum toj ntawm tus kab mob pedicel yog o thiab nkhaus, noj cov duab ntawm "faucet", thiab paj lub cev puas tsuaj. Cov nplaim paj yog deformed, loj, tig ntsuab thiab nplooj zoo li, thiab tsis wither rau lub sij hawm ntev thiab tsis muaj zog. Cov kab mob ntawm cov qia yog oblong dawb nti, thiab cov kab mob yog o thiab nkhaus.
Muaj ob lub sij hawm ncov los ntawm bolting mus rau tag nrho flowering. Tus kab mob no feem ntau tshwm sim nyob rau hauv qis kub thiab high humidity ib puag ncig tej yam kev mob. Tus kab mob no tshwm sim ntau dua nyob rau hauv thaj av uas tsis tshua muaj av, dej tsis zoo, cov av hnyav, dej ntau dhau, qhov kub thiab txias sib txawv ntawm nruab hnub thiab hmo ntuj, hnyav dew condensation, thiab siv nitrogen chiv ntau dhau.
Kev tiv thaiv thiab kho tus kab mob no tuaj yeem pib los ntawm cov hauv qab no. Ua ntej, nws yog ib qho tsim nyog los xaiv cov kab mob-resistant ntau yam. Mustard hom thiab rapeseed yog heev resistant, ua raws li cabbage hom. Cabbage hom yog raug rau cov kab mob thiab tuaj yeem xaiv raws li cov xwm txheej hauv zos; thib ob, nws yog ib qho tsim nyog yuav tsum tig nrog cov qoob loo nyom rau 1 mus rau 2 xyoos los yog tig cov qoob loo ntawm dej nyab thiab dej nag; thib peb, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tshem tawm cov kab mob. Seedlings, thaum "faucets" tshwm, txiav lawv tawm nyob rau hauv lub sij hawm thiab hlawv lawv intensively; thib plaub, fertilize kom zoo thiab tshem cov kwj deg thiab ntws tawm cov stains.
Thaum lub sij hawm bolting lub sij hawm ntawm rapeseed, Chlorothalonil75% WP 600 zaug ua kua, los yog Zineb65% WP 100-150g / 667 square meters, los yog Metalaxyl25% WP 50-75g / 667 Square meters, tshuaj tsuag 40 mus rau 50 kilograms ntawm cov dej sib npaug, ib zaug txhua 7 mus rau 10 hnub, tshuaj tsuag 2 mus rau 3 zaug, uas tuaj yeem tiv thaiv qhov tshwm sim ntawm cov kab mob.
Thaum pib ntawm lub paj, koj tuaj yeem txau Chlorothalonil75% WP 1000-1200 zaug ua kua + Metalaxyl25% WP 500-600 zaug kua, lossis Metalaxyl 58% · Mancozeb WP 500 zaug ua kua, tswj 2 mus rau 3 zaug tsis tu ncua, nrog rau lub sijhawm luv. 7 mus rau 10 hnub ntawm txhua lub sijhawm, uas muaj kev tswj xyuas zoo ntawm cov xeb dawb.
Post lub sij hawm: Mar-25-2024
