论文部分内容阅读
自从“氧化乐果防治小绿叶蝉效果好”一文在本刊82年第4期中刊登以来,有些读者对氧化乐果在茶树上的应用提出了意见,现在就此问题解答如下。氧化乐果是一种内吸性杀虫杀螨剂,对小绿叶蝉、介壳虫等有良好的防治效果。但是它对人畜急性胃毒毒性大,对大白鼠的急性口服LD_(50)值约为50毫克/公斤,按农药毒性分类应属于高毒类农药。农牧渔业部和卫生部在《人民日报》82年6月22日曾发表
Since the article “Omethoate Prevention and Treatment of Green Leafhoppers Has Good Effects” was published in Issue 4 of August, 82, some readers have put forward their opinions on the application of omethoate on tea trees. The answers to this question are as follows. Omethoate is a systemic insecticide acaricides, small green leafhopper, scale insects, etc. have a good control effect. However, it is toxic to acute stomach poisoning in humans and animals. Its acute oral LD 50 value to rats is about 50 mg / kg. It should be classified as a highly toxic pesticide according to its toxicity. The Ministry of Agriculture, Animal Husbandry and Fishery and the Ministry of Health were published on People’s Daily on June 22, 1982