苹果园二斑叶螨药剂防治研究

Studies on the Acavicides Control of Tetranychus Urticae in Apple Orchards

田间试验测定了1.8％集琦虫螨克乳油等12种药剂对二斑叶螨的防治效果。结果表明1.8％集琦虫螨克乳油、15％三唑锡可湿性粉剂、57％益显得乳油、24.5％阿维柴乳油等4种药剂药后3 d和7 d的防效均可达到95％以上。可用于二斑叶螨的有效防治。敌死虫矿物油、SUNPRAY矿物油的防效虽介于85.0％～90.0％之间,但其作用机理特殊,能延缓害螨抗性产生,也可以推广使用。

The control effects of 12 kinds of pesticides to Tetranychus urticae had been determinded in apple orchards of Shaanxi . It was showed that the 3 days and 7 days control effects of Abamectin 1.8% EC, Azocyclotin 15% WP, propargite 57% EC and abamectin and petroleum oil 24. 5% EC were all over 95%. They could be used effectively in the control of Tetranychus urticae. Although the control effects of D-C Tron and Sunpray mineral oil were 85. 0%-90. 0% ,the unique mechanism and slow occurrence of resistance determined they could also be used as effective agents to control Tetrany-chus urticae.