摘要
１９９３～１９９５年，在晋中祁县从５月上旬到８月底利用棉铃虫性诱剂对棉铃虫的发生代数、发生时期等进行了观察。晋中特早熟棉区棉铃虫一年发生４代。越冬代成虫发生期为５月中旬至６月上旬，以后各代约间隔一个月发生。造成为害的主要为２代，３代次之。据此，提出了以化学防治为主、生物防治为辅的重点防治２代、３代棉铃虫的防治对策。
The annual numbers of generation and outbreak periods of cotton bollworm (Heliothis armigera) were investigated using sexual attractant traps in Qixian county, Jinzhong district of Shanxi province in 1993-1995. There were 4 generations annually in this area. The adults ofover-wintering generation of H. armigera occured from the 2nd ten days of May to the 1st ten days of June, and followed by other 3 generations in about 1-month interval. Damage of cottonwas caused by 2nd and 3rd generations mainly. A strategy for controlling the 2ndand 3rd generatidn was recommended.
出处
《山西农业科学》
1996年第2期62-64,共3页
Journal of Shanxi Agricultural Sciences
