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在第2代梨木虱若虫期,用10％吡虫啉WP10 000倍、8 000倍、5 000倍、3 000倍液喷雾防治1次。药后1d的校正防效分别为89.4％、92.4％、94.0％和93.6％;药后3d的校正防效分别为86.5％、91.5％、95.7％和95.1％;药后7d的校正防效分别为92.6％、94.9％、96.8％和98.0％;药后14d的校正防效分别为77.5％、86.8％、92.2％和96.3％,均明显高于目前常用农药的防效,且对植物安全,并对害虫天敌及有益生物无不良影响。
In the second generation of pear lice nymphs stage, with 10% imidacloprid WP 10 000 times, 8 000 times, 5 000 times, 3000 times spray control once. The corrected preventive effects on the 1st day after drug administration were 89.4%, 92.4%, 94.0% and 93.6%, respectively. The corrected control effects were 86.5%, 91.5%, 95.7% and 95.1% on the 3rd day after drug treatment respectively. Were 92.6%, 94.9%, 96.8% and 98.0%, respectively. The corrected control effects on the 14th day after treatment were 77.5%, 86.8%, 92.2% and 96.3%, respectively, which were significantly higher than those of the currently used pesticides. And no adverse effects on pest natural enemies and beneficial organisms.