螨类是我省果树上的主要害虫。近几年来,各地多采用杀虫脒进行防治,取得了较好的效果。但根据国内外多年的试验证明,杀虫脒对小白鼠确有致癌作用,对人有潜在的致癌危险。为保护人民健康,农业部去年十二月下达了文件,禁止在果树等经济作物上使用。为了尽快找出高效、低毒、低残留、药源广的新杀螨剂,取代杀虫脒,为一九八二年大面积应用提供依据,我们会同有关单位,进行了取代杀虫脒的联合试验,并着重对三氯杀螨醇的药效,特别在五月上旬气温较低情况下的应用效果,进行了试验。现将结果总结于后: Mites are the main pests on our province’s fruit trees. In recent years, more use of chlordimeform control around, and achieved good results. However, according to many years of experiments at home and abroad show that chlordimeform does have carcinogenic effects on mice, a potential carcinogenic risk to humans. In order to protect people’s health, the Ministry of Agriculture issued a document in December last year prohibiting the use of cash crops such as fruit trees. In order to find out a new acaricidal agent with high efficiency, low toxicity, low residue and wide drug source as soon as possible and replace chlordimeform for providing a basis for large-scale application in 1982, we will conduct a survey on the substitution of chlordimeform Joint trials, and focused on the efficacy of dicofol, especially in early May the case of low temperature applications, the effect was tested. The results are summarized below: