绥化地区大豆田蚜虫及其天敌发生规律的研究

为了明确以绥化为代表的黑龙江省中部地区的大豆蚜及其天敌的发生规律,2011年对黑龙江省绥化地区大豆田进行定点、定期调查。结果表明:6月20日至9月5日是大豆蚜虫的发生、危害期,盛发期是7月25日至8月15日;大豆蚜天敌主要以异色、龟纹、中华草蛉、印度三叉蚜茧蜂、食蚜蝇、小花蝽为主,寄生性天敌印度三叉蚜茧蜂数量到达峰值的时间是7月19日,捕食性天敌中华草蛉数量到达峰值的时间是8月10日,大豆蚜虫天敌数量到达峰值的时间比大豆蚜虫滞后5～10d。

Occurrence Rule of Soybean Aphid and Natural Enemies in Suihua Region

In order to clarify rule of soybean aphid and natural enemies of Suihua city,which in the central region of Heilongjiang province,the fixed point and periodic investigation of Suihua soybean field in Heilongjiang province were conducted in 2011.The results showed that happen and hazards period of soybean aphids were from June 20th to September 5th,full incidence period was from July 25th to August 15th;Soybean aphid natural enemies were mainly with color,tortoises,Chrysopa sinica,India trigeminal aphid parasitoids,Syrphidae and flower bugs;the number of India trigeminal aphid parasitoids reached the peak time was July 19th,the number of predatory enemies Chrysopa sinicareached the peak time was August 10th;the number of natural enemies of soybean aphids reached the peak time later 10days than soybean aphids.