基于灯诱虫量的稻飞虱发生动态特点研究

Study on Occurrence Dynamic Characteristic of Rice Planthopper Based on the Number of Light Trap

龙山县2006—2014年灯诱数据资料分析结果显示,该县白背飞虱种群数量上升,白背飞虱在稻飞虱混合种群中的数量平均比例达74.0%,形成数量优势种群。白背飞虱和褐飞虱年度间各月种群的变化趋势基本一致,6—7月白背飞虱种群占优势,白背飞虱在稻飞虱混合种群中的数量平均比例达88.8%。8月褐飞虱种群占优势,褐飞虱在稻飞虱混合种群中的数量平均比例达74.8%。年变动趋势表明,白背飞虱已成为主导稻飞虱混合种群变化趋势的关键种群。

The results of light trap data analysis in Longshan County from 2006 to 2014 showed that,white-backed planthopper population in the County rosed ,white-backed planthopper in rice planthopper population on average proportionate to the number was 74.0% and formed a number of dominant population.Variation tendency of white-backed planthopper and brown planthopper population each month in the year was basically the same,from June to July,the white-backed planthopper population dominated,and the number of white-backed planthopper in rice planthopper population on average proportionate was 88.8%.Brown planthopper population dominated in August,and the number of brown-backed planthopper in rice planthopper population on average proportionate was 74.8%.Annual trends showed that white-backed planthopper had become a dominant hybrid rice planthopper population trends of key population.