Cov pob kws borers tuaj qhov twg?
Cov pob kws borers tuaj qhov twg?

Video: Cov pob kws borers tuaj qhov twg?

Video: Cov pob kws borers tuaj qhov twg?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Kab yog ib txwm nyob rau teb chaws Europe, Ameslikas kis ntau yam ntawm millet, nrog rau broom pob kws . Cov European pob kws borer tau tshaj tawm thawj zaug hauv North America xyoo 1917 hauv Massachusetts, tab sis tej zaum tau qhia los ntawm Tebchaws Europe ntau xyoo dhau los.

Ua li no, koj yuav ua li cas tiv thaiv pob kws borers?

Lwm yam paub pob kws borer txoj kev tswj hwm suav nrog siv cov tshuaj tua kab tua kab tua hluas. Nws yog ib qho tseem ceeb rau cov nroj tsuag txhua tsib hnub kom txog thaum tassels pib xim av. Lwm qhov txiaj ntsig pob kws borer Txoj kev kho mob yog ua kom lub vaj thiab ib puag ncig tsis muaj cov nroj tsuag.

Ib yam li ntawd, ua li cas cov pob kws borers kis tau cov pob kws? 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.

Ib yam li ib tug yuav nug, dab tsi yog pob kws borer zoo li?

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.

Cov noob twg tswj cov pob kws borer?

Lawv txhua tus muaj a noob los ntawm Bacillus thuringiensis. Vim hais tias cov hybrids muaj ib tug 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.

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