【摘要】 利用烟蚜茧蜂控制工厂化蔬菜桃蚜 ,进行了放蜂量、放蜂时期、放蜂次数以及控蚜效果的试验研究。结果表明 ,用烟蚜茧蜂控制温室桃蚜放蜂量 (蜂蚜比 )在桃蚜发生初期以1:200为宜 ,连续多次放蜂会收到较好的效果。在温室黄瓜桃蚜发生初期 ,每隔5d释放1次,连续7次释放烟蚜茧蜂 ,有效控制期可达50d。更多还原

【Abstract】 From the control test of A.gifuensis on industrialized vegetable peach aphid through investigation on released amount, date,times and its aphid control efficiency,the results showed that control lina green peach aphid with A.gifuensis, the most appropriate released amount of A.gifuensis should be 1 to 200 aphids at the beginning of peach aphid outbreak. Continuous releasing would receive better control effect. At the beginning of cucumber aphid outbreak, 7 times consecutive release (each 5 days) of A. gifuensis could control peach aphid for 50 days.更多还原