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为了研究16%四螨·哒螨灵WP防治苹果树红蜘蛛的应用技术,进行了田间药效试验。结果表明:16%四螨·哒螨灵WP 89～114 mg/kg,药后2,7,10 d对苹果树红蜘蛛的防效分别为89.42%～94.25%、93.15%～95.81%、95.71%～96.13%,略优于单剂15%哒螨灵EC的防效92.44%、81.06%、89.70%,显著优于单剂20%四螨嗪SC的防效62.03%、75.00%、76.65%。在苹果树红蜘蛛发生期,采用16%四螨.哒螨灵WP 89～114 mg/kg喷雾防治,能有效控制其危害。
In order to study the application technology of 16% Tetranychus and Pyridaben WP in preventing and treating apple tree red spider, field efficacy test was conducted. The results showed that the control effects of 16% Tetranycobalcidae WP 89 ~ 114 mg / kg on apple spider mite spider were 89.42% ~ 94.25%, 93.15% ~ 95.81%, 95.71% % To 96.13%, slightly better than the control efficacy of single dose of 15% pyridaben EC 92.44%, 81.06%, 89.70%, significantly better than the single effect of 20% mite mites SC 62.03%, 75.00%, 76.65% . In the occurrence of red spider apple tree, the use of 16% Tetranychus pyridaben WP 89 ~ 114 mg / kg spray control, can effectively control the harm.