20％甲维盐速溶剂防治马尾松毛虫技术初报

甲氨基阿维菌素苯甲酸盐(甲维盐)是阿维菌的深加工产品,是一种高效、高选择、绿色环保型生物源杀虫剂。用量很小,易降解,对环境无污染、无残留。应用甲维盐飞机防治马尾松毛虫,效果较好。1材料与方法1·1防治区概况防治区位于大悟县中南部,属低山丘陵区,林地海拔60~210m,相对高     

30.5%毒死蜱·甲氨基阿维菌素苯甲酸盐微乳剂防治小菜蛾田间药效试验

田间试验表明,30.5%毒死蜱·甲氨基阿维菌素苯甲酸盐微乳剂对小菜蛾有良好的防治效果,15～25mL/667m2药后14d防效均达98%以上。     

30．5％毒死蜱·甲氨基阿维菌素苯甲酸盐微乳剂防治小菜蛾田间药效试验

田间试验表明,30.5%毒死蜱.甲氨基阿维菌素苯甲酸盐微乳剂对小菜蛾有良好的防治效果,15～25mL/667m2后14d防效均达98%以上。     

HPLC法测定甲氨基阿维菌素苯甲酸盐

甲氨基阿维菌素苯甲酸盐（Ｅｍａｍｅｃｔｉｎｂｅｎ－ｚｏａｔｅ），化学名：４”－ｅｐｉ－４”－ｄｅｏｘｙ－４”－ｍｅｔｈｙｌａｍｉｎｏａｖｅｒｍｅｃｔｉｎｂｅｎｚｏａｔｅ，简称：ＭＡＡＶ，是由阿维菌素（Ａｖｅｒｍｅｃｔｉｎ简称：ＡＶ）为原料经过化学结构修饰得到的一种高效抗蠕虫药。ＭＡＡＶ属于大环内酯类生物杀虫剂，含有Ｂ１ａ和Ｂ１ｂ两个有效组分，国外将其作为一种绿色无公害杀虫剂广泛应用于种植业和畜牧养殖业。ＭＡＡＶ的作用机制是通过激活虫体肌肉内Ｍ受体，使虫体肌肉发生痉挛性收缩并导致麻痹瘫痪而排出体外…     

6%乙基多杀菌素SC防治小菜蛾田间药效试验

小菜蛾是世界性蔬菜害虫,主要危害十字花科蔬菜。小菜蛾生育期短,世代重叠,抗药性强,一般菜农只能频繁施用农药进行防治,但效果并不理想,如何防治该虫已成为生产上迫切需要解决的问题。为此,我们开展了6%乙基多杀菌素悬浮剂防治甘蓝     

近期批准登记的农药

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Effects of Droplet Distribution on Insecticide Toxicity to Asian Corn Borers （ Ostrinia fumaeafis） and Spiders （Xysticus ephippiatus）

Distribution of horizontal boom produced droplets downwards into maize canopies at flowering period and its effects on the efficacies of emamectin benzoate, lambda-cyhalothrin and chlorantraniliprole against the second generation of Asian corn borer （ACB） larvae and their toxicity to spiders were studied. When insecticides were sprayed downwards into the maize canopies, randomly filtering out droplets by upper leaves led to great variations of droplet coverage and density within the canopies. Consequently, the efficacies of lambda-cyhalothrin and emamectin benzoate against ACB larvae were decreased because of randomly filtering out droplets by upper leaves. But field investigation showed that lambda-cyhalothrin was extremely toxic to hunting spiders, Xysticus ephippiatus, and not suitable to IPM programs in regulation of the second generation of ACB. Therefore, randomly filtering out droplets by upper leaves decreased lambda-cyhalothrin＇s efficacy against ACB larvae, but did little to decrease its toxicity to X. ephippiatus. Amamectin benzoate can reduce the populations of X. ephippiatus by 58.1-61.4%, but the populations can recover at the end of the experiment. Chlorantraniliprole was relatively safe to X. ephippiatus. It only reduced the populations of X. ephippiatus by 22.3-33.0%, and the populations can totally recover 9 d after application.