白湖圩区稻飞虱的发生与综合防治研究

经１９９０～１９９４连续５年的研究结果表明：稻飞虱在水稻上种群数量各代没有明显的代别界限，而与水稻生育期有密切的联系。稻飞虱的发生程度取决于迁入量，迁入量越大，主害代虫量越大。褐飞虱可划分为三种气候发生型，即低温雨两重发型、偏湿多雨中发型和高温少雨轻发型。白背飞虱可划分为高湿少雨轻发型、偏温多雨重发型和低温多雨中发型。本文还论述稻飞虱的综合防治技术。

The Occurrence of Rice Plant Hopper in Baihu and Its Integrated Control

The experiment was carried out in five successive years from 1990 to 1994.The resultsshowed that there were no significant limit between generations for rice plant- hopper whosepopulation size closely related with the growth stage of rice plant.The main hopper incresingwith the immigratory volume,the occurrence intensity of rice plant- hopper depended on theimmigratory volume,Brown plant-hopper was separated into three climatic occurence types,i.e. heavy occurrence type for low temperature and more rain,middle occurrence type forwarm and mor rain,and light occurrence type for high temperature and less rain. Whitebackrice plant- hopper was also divided into three climatic occurrence types,i.e.light occurrencetype for high temperature and less rain, henvy occurrence type for warm and more rain andmiddle occurrence type for low temperature and more rain.