利用性诱剂监测安顺稻区稻纵卷叶螟发生动态

Monitoring the Occurrence Dynamics of Cnaphalocrocis mediates Guenéein Anshun Rice Region by Sex Pheromone Trap

为明确性诱剂和田间系统调查对安顺稻区稻纵卷叶螟区域性发生规律的监测效果,2016年利用性诱剂和田间系统调查对安顺6个稻区稻纵卷叶螟发生动态进行监测。田间赶蛾蛾量均高于诱捕器对稻纵卷叶螟成虫的诱集总量,各稻区主害代间诱集总量有一定的变化,紫云田间赶蛾量全年最高,性诱剂诱集蛾量镇宁最高,普定两种监测方法的全年蛾量为六个稻区中最低。两种方法高峰日、诱集蛾量存在一定的差异,但田间赶蛾和性诱剂诱集蛾量高峰期发生趋势基本一致,性诱剂诱蛾量与田间赶蛾量存在正相关比例关系,能够反映出田间稻纵卷叶螟的发生动态。

In order to clarify Monitoring effect of the methods of sex pheromone trap and field systematic investigation on regional occurrence regularity of Cnaphalocrocis mediates Guenée in Anshun rice region were clarified.The occurrence dynamics of C.mediates were monitored by using the methods of sex pheromone trap and field systematic investigation in 2016 in six counties,Xixiu,Pingba,Puding,Zhenning Buyi and Miao Autonomous county(Zhenning in short),Guanling Buyi and Miao Autonomous county(Guanling in short),Ziyun Miao and Buyi Autonomous county(Ziyun in short).In late June a small amount of adult and larvae of C.mediates began to appear in Xixiu,Pingba,Puding and Ziyun,but Guanling and Zhenning were later than them and did not appear in the fields until early July.The number of adult C.mediates in Guanling and Pingba disappeared in early September,but there were still a few months in the other four rice regions in mid-September,and then they were hardly observed.The amount by the driving moth method in Ziyun field is the highest in the whole year,the amount by the sex pheromone trapping method is the highest in Zhenning,and the amount of moth-catching in Puding is the lowest among the six rice regions in the entire year.There are some differences between the two methods in the peak day and the amount of trapping moths,but the occurrence trend of the crowning period of the driving moth method is basically the same with that of the sex pheromone trapping method.The sex pheromone trapping method amount has a positive correlation with the amount of the driving moth method,which can reflect the occurrence dynamics of C.mediates in the field.