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[目的]以家蚕为试验材料,研究药用植物狼毒大戟对鳞翅目昆虫的药杀效果。[方法]取多年生新鲜狼毒大戟根制成水浸液,分别涂抹家蚕背部、浸泡家蚕、涂抹桑叶饲喂家蚕。[结果]用药液涂抹背部的家蚕无明显的中毒症状;浸泡1、3min的家蚕取出后可存活7d左右;浸泡5min的家蚕可存活2d左右;浸泡15min的家蚕取出后最多可存活10h。家蚕取食涂抹水浸液的桑叶后,2d内100%死亡。[结论]狼毒大戟水浸液对家蚕具有明显的触杀作用和胃毒作用。
[Objective] The study aimed to study the killing effect of medicinal plant Euphorbia euphorbiae on Lepidoptera by using silkworm as test material. [Method] Take Perennial fresh Euphorbia root made of aqueous extract, respectively, apply silkworm back, soak silkworm, mulberry leaves, feeding silkworm. [Result] There was no obvious symptom of poisoning in the silkworm which was smeared on the back of the silkworm. The silkworm immersed for 1 and 3min survived for about 7 days. The silkworm soaked for 5min could survive for about 2 days. The silkworm immersed for 15min could survive for 10h after it was taken out. Silkworm feeding daub mulberry leaves, 2d 100% death. [Conclusion] Euphorbia Euphorbia aqueous extract has obvious contact with silkworm and stomach poisoning effect.