cov tsos mob
Kuj tseem hu ua fusarium wilt, kab mob wilt. Ob lub noob thiab cov neeg laus tuaj yeem raug tus kab mob, thiab peb hom tau pom.
Thawj hom yog hom yellowing, uas qhia tau hais tias yellowing ntawm lub yub theem, thiab kev loj hlob ntawm cov kab mob nroj tsuag nyhav stagnate. Kuj tseem muaj cov tsos mob ntawm qhov chaw nyob ntawm theem yub, cov nroj tsuag hluas wilt, thiab zoo li tuag tom qab. Cov nplooj tsis muaj cov tsos mob sab nraud, tab sis lub hauv paus system tau kis mob hnyav. Qee cov yub tsuas yog kis tau ntawm cov lus qhia ntawm cov hauv paus hniav fibrous. Thaum lub teeb muaj zog, cov tub ntxhais hluas cov nroj tsuag yuav tig daj, thiab nplooj yuav tig daj, tshwj xeeb tshaj yog yellowing ntawm cov leeg, cov leeg yuav tsis tig daj, thiab nplooj yuav tsis curl.
Qhov thib ob yog cov hauv paus rot hom yellowing, cov nplooj me yog curled, thiab tom qab no hom nplooj tig daj, uas yog cov tsos ntawm yellowing raws cov leeg, thiab tom qab ntawd cov leeg me me kuj tig daj, tab sis cov nplooj nplooj yog ntsuab. Rub cov hauv paus hniav feem ntau tig mus rau hauv cinnamon thiab reddish cinnamon.
Hom thib peb yog cov nroj tsuag muaj kab mob luv luv thiab me me, nplooj tsis hloov daj lossis curl, thiab cov ducts uas rub tawm hauv paus system, txiav cov qia thiab petiole tag nrho tig mus rau hauv cinnamon lossis liab cinnamon, uas txawv ntawm qhov. thawj thiab thib ob hom.
kab mob
Fusarium oxysporum f.sp.apii (Nels.et Sherb.) Snyder & Hansen, hu ua Fusarium oxysporum celery tshwj xeeb hom, belongs rau fungal kingdom Ascomycota anamorphic Fusarium genus.
Kev kis kab mob thiab kab mob
Cov fungus feem ntau overwinters nyob rau hauv cov av li chlamydospores thiab muaj peev xwm ciaj sia tau ntau xyoo. Thaum cov xwm txheej tsim nyog, germination tshwm sim, thiab cov kab mob loj hlob thiab cuam tshuam los ntawm cov hauv paus hniav zoo, ua rau ib feem ntawm lub cortex rot. Tom qab ntxeem tau, lawv ciaj sia nyob rau hauv vascular bundles xws li cov hauv paus hniav, cag caj dab, petioles, thiab lwm yam. Mycelium inhibits upward thauj cov as-ham thiab dej. Lub sij hawm incubation ntawm tus kab mob yog hais txog 20 hnub. Qhov saum npoo yog qhuav thiab hauv av kub nce sai, thiab kev puas tsuaj loj heev. Qhov ntsuas kub qis dua 7.7 degree thiab siab dua 36 degree.
Txoj kev tiv thaiv
① Xaiv cov kab mob tiv thaiv kab mob, siv cov chiv decomposed los yog bioactive organic chiv, thiab ntxiv dag zog rau kev tswj cog qoob loo kom cov nroj tsuag loj hlob zoo thiab txhim khu kev tiv thaiv kab mob. Kev ywg dej yuav tsum tau ua nrog dej me me thiab nquag ywg dej kom cov av noo thiab tiv thaiv cov av kom tsis txhob qhuav thiab ntub dej los yog drought ntev.
② 10 hnub ua ntej qhov pib ntawm tus kab mob, dej 1500 zaug ntawm 50 feem pua Diethofencarb · carbendazim wettable hmoov (
diethofencarcarbenda-zim) los yog 1500 zaug ntawm 30 feem pua hymexazol wettable hmoov, thiab 1000 zaug ntawm 50 feem pua chlorobromoisocyanuric acid soluble hmoov.
