Bollwormsareatraditionalthreattocottoncrops.Youngonesfe...
问题详情:Bollwormsareatraditionalthreattocottoncrops.Youngonesfeedontheboll,thepartofthecottonplantthatcontainstheseeds.AbacteriumknownasBtisabletokillbollwormsandsomeotherpests.BtisshortformforBacillusth...