20%查虫清水剂防治茶园主要害虫的药效

Pesticidal Efficacy of 20% Chachongqing on the Main Pests in Tea Garden

植物源农药20%查虫清水剂防治茶园主要害虫的药效试验结果表明,20%查虫清水剂对茶小绿叶蝉、茶橙瘿螨、茶尺蠖防治效果较好,持效期长,每公顷用药量5 400 mL药后14 d防效分别为87.3%、95.3%、94.6%,可兼治黑刺粉虱、碧蛾蜡蝉等5种害虫,对蜘蛛等5类天敌影响较小,适宜在广大茶区推广应用。

A field trial was conducted to test the efficacy of botanical insecticide 20 Chachongqing agent against the main pests in tea garden of Institute of Fruit and Tea,hubei academy of agricultural sciences.Results indicated that this insecti-cide had great control efficacy against tea leaf hopper,pink mite and Ectropis oblique as the control effect of 5 400 mL/hm2 treatment was 83.7%,95.3% and 94.6% 14 d after application,respectively.It also had control effect against Aleurocanthus spiniferus and Geisha.However,the effect of 20% Chachongqing on the nature enemies of the pests was little,thus was suitable for popularization in tea production regions.