Yuav ua li cas European pob kws borer tau mus rau America?
Yuav ua li cas European pob kws borer tau mus rau America?

Video: Yuav ua li cas European pob kws borer tau mus rau America?

Video: Yuav ua li cas European pob kws borer tau mus rau America?
Video: Tsis Muaj Peev Xwm Yuav Ua Li Cas 2024, Kaum ib hlis
Anonim

Cov European pob kws borer tau tshaj tawm thawj zaug hauv North Asmeskas Xyoo 1917 hauv Massachusetts, tab sis tej zaum tau qhia los ntawm Teb chaws Europe ntau xyoo dhau los. Txij li thaum nws pib nrhiav tau nyob rau hauv lub Tebchaws Asmeskas , cov kab tau kis mus rau Canada thiab sab hnub poob thoob plaws Tebchaws Meskas mus rau Rocky Roob.

Nyob rau hauv kev hwm rau qhov no, koj yuav ua li cas tswj European pob kws borer?

Foliar tshuaj tsuag: European pob kws borers tuaj yeem tswj tau zoo nrog ib mus rau peb cov tshuaj tsuag ib ntu ntawm pob kws . Yog tias, thaum koj tshawb nrhiav, koj pom tias 15% (lossis ntau dua) ntawm pob ntseg muaj cov larvae nyob los yog noj tshiab puas tsuaj, tshuaj tsuag ib zaug nrog Bt lossis spinosad.

Tom qab, lo lus nug yog, dab tsi gene tswj cov pob kws borer? Lawv txhua tus muaj a noob los ntawm Bacillus thuringiensis. Vim tias cov hybrids no muaj cov kab txawv noob , lawv feem ntau hu ua cov nroj tsuag transgenic. Lub Bt noob Hauv cov nroj tsuag no tsim cov protein uas tua cov European pob kws borer larvae.

Ua li no, pob kws borer zoo li cas?

Cov European pob kws borer hla lub caij ntuj no raws li tag nrho-loj hlob larva nyob rau hauv pob kws stalks thiab lwm yam nroj tsuag tsis kam xws li nroj stems. Cov larva mature yog hais txog 1 nti (25 mm) ntev, creamy rau greyish nyob rau hauv cov xim, thiab cim los ntawm es inconspicuous kab ntawm me me, puag ncig, xim av me ntsis khiav qhov ntev ntawm nws lub cev.

Yuav ua li cas cov pob kws borers kis pob kws nroj tsuag?

Kev puas tsuaj rau pob kws yog tshwm sim los ntawm cov hluas larvae uas zom nplooj thiab tassels. Tom qab ntawd lawv tunnel txhua qhov chaw ntawm lub ceg thiab pob ntseg, ua rau txo qis cog zog,vu ceg , kev txhim kho pob ntseg tsis zoo thiab poob pob ntseg. Lwm cov qoob loo raug puas tsuaj feem ntau los ntawm tunneling ntawm lub ceg , pods los yog stems los ntawm larvae.

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