玉溪县是我省水稻高产区之一。近三年来,全县水稻面积均在13万亩左右,1979年稻飞虱发生84383亩,1980年发生93475亩,1981年发生83197亩,致使水稻稳产高产受到很大威胁。为摸清虫害规律,给防治提供科学依据,三年来我们从秧田期开始,对稻飞虱进行了田间调查、室内饲养和黑光灯观察。 Yuxi County is one of the province’s rice high yield areas. In the past three years, the area of ​​rice in the county was about 130,000 mu. There were 84,383 mu of planthopper in 1979, 93,475 mu in 1980 and 83,197 mu in 1981, which caused great threat to the stable and high yield of rice. To find out the law of pest and provide a scientific basis for prevention and treatment, we started the field investigation of rice planthopper from the seedling stage in the past three years, and observed indoor feeding and black light.