长沙市和临湘县小地老虎的发生规律与防治方法

摘要

Using pest forecast light trap and field attractant to study the occurrence regulation of Agrotis ypsilon Rottemberg in Changsha and Linxiang of Hunan province in 2010-2013.The results showed that there were four obvious catch peaks of Agrotis ypsilon Rottemberg in Changsha,which were early April,end of May to early June,late June to early July,and early September,respectively.Moreover,the trend of light collection in Linxiang was accordant with that in Changsha.For attractant treatment,there were seven catch peaks,which were early April,early and late May,late June,early July,mid-August,and early and mid-September,respectively.In conclusion,Agrotis ypsilon Rottemberg could develop at least four generations in a year in Changsha.%2010～2013年,采用虫情测报灯和田间性诱剂调查相结合的方法,研究了小地老虎在湖南长沙市和岳阳临湘县的发生规律.结果表明:湖南省长沙市小地老虎有4个明显的上灯高峰,分别为4月上旬、5月末至6月上旬、6月末至7月上旬、9月上旬,临湘县小地老虎上灯高峰均与长沙市的上灯高峰同步.小地老虎性诱剂诱捕量有7个高峰期,分别为4月上旬、5月上旬、5月下旬、6月末、7月上旬、8月中旬和9月上中旬.可见小地老虎在长沙市至少能完成4个世代.