在北京海淀区草莓园和密云县板栗园进行释放拟长毛钝绥螨控制草莓和板栗害螨的试验。试验共设置益害比为1∶10、1∶30、1∶90的3个处理和常规农药处理,以不释放捕食螨,也不使用农药作为对照。结果显示,在草莓园,益害比为1∶10和1∶30时释放14 d后对害螨的防效分别为90.46%和85.02%,释放28 d后防效分别为95.2%和98.3%,益害比为1∶90时前期控制效果较差,28 d后防效也达到了93.74%。在板栗园,益害比为1∶10和1∶30时释放28 d后对害螨的防效分别为77.28%和72.19%,释放42 d后防效分别为94.00%和86.86%,益害比为1∶90的防治效果较差,释放42 d后防效也只达到78.51%。释放捕食螨的防治效果显现时间滞后于化学防治,但持效性好,在板栗园差异尤为明显。 Experiments on controlling the control of strawberry and chestnut pest mites by artificial hairy Amblyseius in Strawberry Park, Haidian District, and chestnut garden in Miyun County, Beijing. A total of three trials were set to benefit the ratio of 1:10,1:30,1:90 3 and conventional pesticide treatment to prevent the release of predatory mites, nor the use of pesticides as a control. The results showed that the control effects on pest mites were 90.46% and 85.02% respectively after being released for 14 days at 1:10 and 1:30 in strawberry garden, and 95.2% and 98.3% after 28 days respectively. , Benefit and harm ratio of 1:90 when the early control effect is poor, 28 d after the control effect has reached 93.74%. In the chestnut garden, the control effects on pest mites were 77.28% and 72.19% respectively after releasing for 28 days at 1:10 and 1:30. After 42 days, the control effects were 94.00% and 86.86% respectively, The control efficiency of 1:90 was worse than that of control. After 42 days, the control effect was only 78.51%. The release of predatory mite control effect showed time lag in chemical control, but the good effect, especially in chestnut garden differences.