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通过施用不同类型的杀螨剂对苹果山楂叶螨Tetranychus viennensis和天敌塔六点蓟马Scolothrips takahashii的影响进行分析,结果表明,15%哒螨灵EC(0.4 mL/L)、73%炔螨特EC(0.5 mL/L)表现出较好的速效性和持效性,但是对塔六点蓟马有一定的杀伤作用,240 g/L螺螨酯SC(0.2 mL/L)、5%唑螨酯SC(0.4 mL/L)对山楂叶螨相对防效较好,对塔六点蓟马影响较小,500 g/L四螨嗪SC(0.2 mL/L)速效性较差,但对天敌安全,20%甲氰菊酯EC(0.5 mL/L)对山楂叶螨防治效果差,且对天敌杀伤率始终较高,从而可能造成山楂叶螨的爆发。复配药剂10%阿维.四螨SC(0.67 mL/L)综合了单剂的优点,15.6%阿维.丁醚EC(0.5 mL/L)、6%阿维.哒EC(0.5 mL/L)相对单剂对天敌杀伤率有所降低,1.8%阿维.甲氰EC(0.83 mL/L)则主要表现出单剂甲氰菊酯相同的特点。
The effects of 15% pyridaben EC (0.4 mL / L), 73% propargite (Trimethoprim) on apple pests Tetranychus viennensis and Scolothrips takahashii were studied by applying different types of acaricides. EC (0.5 mL / L) showed good fast and maintainability, but had certain killing effect on six-point thrips, 240 g / L spirodiclofen SC (0.2 mL / L), 5% Mitestris SC (0.4 mL / L) had relatively good control effect on hawthorn spider mites, but had little effect on the thrips six-point. The cucurbitacin SC (0.2 mg / l) at 500 g / Natural enemies were safe. 20% fenpropathrin EC (0.5 mL / L) had a poor control effect on hawthorn spider mites, and its killing rate to the natural enemies was always high, which may cause the outbreak of hawthorn spider mites. Compounding agents 10% Aviclovir SC (0.67 mL / L) combines the advantages of a single agent with 15.6% Avitalin EC (0.5 mL / L), 6% Avicel EC L) had a slight decrease in the killing rate of the natural enemies. 1.8% Avicel EC (0.83 mL / L) mainly showed the same characteristics of the single dose of fenpropathrin.