叶螨是我县果树的主要害虫,长期以来,由于用药品种单一,抗性突出,严重影响果品产量和品质。为了克服叶螨的抗性,保护生态环境,近年来我们引进了国外新型杀螨剂,进行防效对比试验: 试验设:50％溴螨酯乳油(瑞士)1000倍、5％尼索朗乳油(日本)2000倍、5％卡死克水剂(美国) Spider mite is the main pest of fruit trees in our county. For a long time, due to the single drug variety, the resistance is outstanding, seriously affecting fruit yield and quality. In order to overcome the spider mite resistance and protect the ecological environment, in recent years we have introduced a new foreign acaricide, anti-efficacy comparison test: Test set: 50% bromocriptine EC (Switzerland) 1000 times, 5% Nisolong EC (Japan) 2000 times, 5% dead water agent (United States)