论文部分内容阅读
自1968年以来,稻褐飞虱Nilaparvata lugens(Stal)在我国南方稻区连年猖獗为害。为了保护稻褐飞虱的天敌,并用以控制稻褐飞虱的种群数量,全国许多地区和单位已开展了这方面的工作。鉴于各地区地理生态条件和耕作制度的不同,稻褐飞虱的天敌种类以及这些天敌对稻褐飞虱的控制作用亦必然会有差异。为此,我们于1982年7-9月,在汉阳县双晚田进行了本项调查,现将结果整理如下。
Since 1968, the brown planthopper Nilaparvata lugens (Stal) has been rampant in successive years in rice growing areas in southern China. In order to protect the natural enemies of Nilaparvata lugens and to control the population of Nilaparvata lugens, many areas and units in the country have carried out this work. In view of the different geographical and ecological conditions and farming systems in different regions, the natural enemies of the brown planthopper and the control effects of these natural enemies on the brown planthopper will inevitably be different. For this reason, we conducted this survey in Shuangyue County, Hanyang County from July to September of 1982, and the results are summarized as follows.