<正> Field experiments were carried out in northern Zhejiang Province. Three insecticides (methamidophos,Shachongshuang and triazophos) were used to control the
Buprofezin is a new insect chitin-synthesizer inhibitor for rice plant hoppers(Homoptera) and leaf-hoppers (Homoptera) control.Sreedhara Rao(1987) reported its
<正> Pingyangmycin(PYM)is a complex of gly-copeptide-type antitumor antibiotics producedby Streptomyces verticillus var pingyangensisnn.var..In recent years,it
<正> The observation on the stricture of bi—peak—tubercle on Lemma in rice wasconducted with. scanning electric—microscope. It was found that several vertica