论文部分内容阅读
本文应用杀虫双,杀虫单等沙蚕毒素系内吸剂进行根区施药防治水稻害虫,证明一次施入有效量150克,可以有效地防治稻蓟马,三化螟(两代),稻纵卷叶螟(两代)的为害;对褐稻虱,在施药后18天前后有较好的控制作用,对稻瘿蚊无效。收获后测定糙米残留量为0.1～0.2ppm,远低于允许值之下。在施药方法上采用结合中耕耘田,将药剂施于根际,便于在生产上应用。 杀虫双,杀虫单在同等有效量下对稻纵卷叶螟的防治效果有显著差别,杀虫单优于杀虫双,两者之间在化学结构上是否存在差异,值得进一步研究。
In this paper, insecticidal double, insecticidal single Neisseria toxin endotoxin in the root zone pesticide application to prevent rice pests, that an effective amount of 150 grams, can effectively control the rice thrips, yellow rice borer (two generations) , Rice leaf roller (two generations) of the damage; brown planthopper, 18 days after the application of a better control effect on rice gall midge mosquito is ineffective. Brown rice residues were determined after harvest of 0.1 ~ 0.2ppm, well below the allowable value. In the method of applying the combination of cultivating Yun Tian, the agent applied to the rhizosphere, easy to use in the production. Insecticidal double, insecticide single in the same effective amount of the control effect of rice leaf roller has significant differences, insecticide single superior to insecticidal double, the chemical structure between the two is there any difference, it is worth further study.