关键词: 生物源农药, 桃蚜, 防效

Abstract: To screen biogenic pesticides in controlling aphids on peach tree, the field test was carried out using 1.5% pyrethrin aqueous solution (AS), 0.3% matrine AS and 5% eucalyptole soluble concentrate against aphids in the field. The results indicated that of the three biogenic pesticides, 0.3% matrine AS was the most effective. The control efficiency could reach 70.12% on the first day and 91.96% on the 7th day respectively after spraying. Comparing with 70% imidacloprid water dispersible granule, the control effects of 0.5% matrine AS were not significantly different. Matrine AS was well quick-acting and persistance on the control of aphids. The matrine AS was safe to peach tree, and was ideal pesticide to control aphids. The 1 000 dilution of 0.3% matrine AS was suggested to be applied in the fields.

Key words: biogenic pesticides, peach aphids, control efficiency