防治烟蚜农药的筛选试验和大面积示范

Experiment in the Selection of Agro-chemicals for the Control of Tobacco Aphids

筛选 7种防蚜农药配制成不同含量的颗粒剂进行室内外防蚜试验和大面积示范。结果表明 :0 .4%根施净防蚜效果较好 ,防效高达 90 %以上 ,残效期 70～ 80d ,只需在烟苗移栽期施药 1次 ,即可控制整个生长期蚜害。该药低毒 ,使用简便 ,成本低 ,不伤害天敌 ,有利于保护环境 ,建议在生产上推广使用。

A selection test using some granular insecticides to control tobacco aphids (Myzus persicae) were carried out.The results showed that 0.4% Ganshijin granular preparation was most effectiveness on the control of tobacco aphids applied in root-zone of tobacco plants during transplanting .The efficacy on controlling tobacco aphids were over 90% and endurane of insecticides as long as 70～80 days. No diference on dosage used from?15～45 kg/hm 2.The effectiveness of treatment with insecticides in larger area were same as above tests.It was with low toxicity ,easy disloved in soil envinment,safe to natural enemy when applied in root-zone of tobacco plants.This insecticide also low cost and simplify using in fields.The author recomended that it be popularizing in tobacco grown regiouns.