诱虫灯下稻飞虱及其天敌种群数量动态分析

Dynamic Analysis of Rice Planthoppers and Their Natural Enemy Population Quantity under the Trap

为明确稻飞虱及其天敌的种群数量动态规律,以充分发挥天敌对稻飞虱的控制作用,采用灯诱法连续两年对江西省万载县白背飞虱Sogatella furcifera和褐飞虱Nilaparvata lugens及其天敌黑肩绿盲蝽Cyrtorrhinus lividipennis、尖钩宽黾蝽Microvelia horvathi和螯蜂dryinids进行同步诱集。结果显示:2010年和2011年白背飞虱高峰期均发生在7月中旬至8月初;2010年褐飞虱高峰期发生在8月底至9月初,2011年褐飞虱第一次高峰期发生在6月底至7月初,为迁入高峰;第二次高峰期发生在8月底至9月初;尖钩宽黾蝽的第一次高峰期发生在7月中旬到7月底,与白背飞虱的发生高峰期相适应;尖钩宽黾蝽的第二次高峰期以及黑肩绿盲蝽和螯蜂的高峰期发生在8月底到9月初,与褐飞虱的发生高峰期相适应。

For the dynamic regularity of population of rice planthopper and natural enemies of clear, in order to give full play to the control effect of natural enemies on rice planthopper, the light trap method for two consecutive years from 2010 to 2011 of synchronous were trapped in Jiangxi province Wanzai County of white backed planthopper Sogatella furcifera and Nilaparvata lugens of Brown Planthopper and natural enemies of Cyrtorhinus lividipennis, Microvelia horvathi and claws bee dryinids. The results showed that the peak of white-- backed planthopper was in the middle July or early August and brown planthopper was in late August or early September. The immigration peak of brown plan- thopper was in late June or early July. The first peak of Microvelia horvathi Lundblad in light trap occurred in the mid- dle July or late July, the second peak of Microvelia horvathi Lundblad, Cyrtorrhinus lividipennis Reuter, and Dryin- ids were both in late August or early September.