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沙蚕毒素类药剂系有机氮杀虫剂,除具有一般胃毒、触杀作用外,不少品种有很强的内吸性,对害虫选择性强,能使害虫产生拒食作用,药效时间长,可作为防治对有机磷产生抗性害虫的杀虫剂。最近我们用83.3%杀虫环晶体、19%杀虫璜晶体(以上由南开大学元素所提供)及杀虫双颗粒剂对玉米螟幼虫进行了毒力测定和田间药效试验。据室内带毒食料培养测定和击倒性测定,都取得了较好的效果,当食料中含3—5ppm 浓度的杀虫环和杀虫璜时,对玉米螟幼虫产生作用,可诱使不食而导致中毒体软瘫痪死亡。
Nereis toxin class of organic nitrogen pesticides, in addition to the general stomach poisoning, contact action, many species have a strong internal absorption of pests selective, make pests produce antifeedant effect, long time-effectiveness , Can be used as a pesticide to control the development of organic pests resistant pests. Recently we tested the toxicity and field efficacy of corn borer larvae against corn borer larvae with 83.3% insecticidal ring crystals, 19% insecticidal crystals (all provided by the Nankai University element) and insecticidal double granules. According to indoor food poisoning assay and knockdown determination, have achieved good results, when the feed containing 3-5ppm insecticidal ring and insecticidal Juan, corn borer larvae have an effect, can not induce Food poisoning caused by paralysis and death.