【摘要】 为评估使用氯噻啉农药防治农林害虫时对家蚕产生的影响，进行了氯噻啉对家蚕的毒性试验。研究结果表明，8 000 mg/L浓度的氯噻啉对家蚕3龄起蚕无熏蒸毒性；触杀试验中100 mg/L浓度的氯噻啉可致3、4、5龄起蚕100%中毒；用氯噻啉涂抹桑叶分别给3、4、5龄起蚕添食6 h, LC₅₀值4龄>3龄>5龄；添食氯噻啉对家蚕结茧有显著影响；氯噻啉在桑树上的残效期受各种因素影响，20 d左右仍可见中毒症状。由于氯噻啉对家蚕具有强烈的胃毒作用，且在桑叶中的残效期较长，因此该药剂不能用于蚕区周围的大田与森林害虫防治。更多还原

【Abstract】 The toxicity test of imidaclothiz pesticide on silkworm was carried out in order to evaluate its effect used in the prevention and control of pests on silkworm. The study indicated 8 000 mg/L of imidaclothiz had no fumigation toxicity to the 3rd instar larvae under the experimental condition. In the tag toxicity test, 100 mg/L of imidaclothiz could cause the 3rd, 4th and 5th instar larvae 100% poisoned. Feeding the 3rd, 4th and 5th newly molted instar larvae respectively with imidaclothiz aqueous solution for 6 h continuously, the LC50 was 3rd > 4th > 5th instar larvae. The result showed imidaclothiz exerted a significant effect on silkworm cocooning. The residual period of imidaclothiz on mulberry was affected by various factors, and poisoning symptoms of silkworm were still visible around 20 days. Because of its strong stomach toxicity to silkworm and long residual period in mulberry leaves, imidaclothiz cannot be used for field and forest pest control around the silkworm area.更多还原