论文部分内容阅读
杀虫双是我国研制的一种属沙蚕毒素系列的仿生新农药,化学名称为2-N,N-二甲胺基-1.3-双硫代硫酸钠基丙烷。主要用于消灭鳞翅目害虫。杀虫双对哺乳动物的毒性较低,未发现有“三致”作用。一、杀虫双室内灭螺效果:1.杀螺效果浸杀法:22～26℃时钉螺的LD_(50),48小时为20.2ppm,72小时为9.8ppm。钉螺在20ppm 的杀虫双中浸泡72小时死亡率达100%;30ppm,48小时即达100%。20ppm 时,10～16℃72小时钉螺死亡率66.6%,在22～26℃72小时死亡率为100%。说明钉螺的死亡率随温度升高及接触时间增长而提高。喷洒法:杀虫双喷洒后,
Insecticidal double is developed in China is a nereis toxin series of new biomimetic pesticides, the chemical name of 2-N, N-dimethylamino-1.3-sodium bisthiosulfate propane. Mainly used to eliminate Lepidoptera pests. Insecticidal double toxicity to mammals is low, did not find a “three strokes” effect. First, insecticidal double indoor snail effect: 1. Snail kill effect Dip method: 22 ~ 26 ℃ snail LD_ (50), 48 hours to 20.2ppm, 72 hours to 9.8ppm. Snails dipped in 20ppm insecticidal double 72-hour mortality rate of 100%; 30ppm, 48 hours up to 100%. At 20ppm, the mortality of Oncomelania snails at 72 ℃ for 10 ~ 16 ℃ was 66.6%, and the mortality rate was 100% at 72 ~ 26 ℃ in 72 hours. That the snail mortality increased with temperature and increased contact time. Spraying method: insecticidal double spray,