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褐稻虱在我省主要为害晚稻,为害轻者能影响稻谷饱满程度,重者会使稻株枯死倒伏,严重影响水稻产量,当前已成为我省主要水稻害虫之一。1970年本所曾对褐稻虱的发生规律进行过调查研究,查清了在游草上过冬的不是褐稻虱,而是伪褐飞虱和拟褐飞虱。经饲养,褐稻虱在游草上不能完成其发育全过程,而伪褐飞虱和拟褐飞虱也不能在水稻上生活。1973和1974年我们在萧山县迳遊公社下俞大队,对褐稻虱的发生规律和防治方法又进行了调查研究。在年发生世代数,田间消长和分布,以及防治方法等方面,取得了一些初
The brown planthopper mainly infects the late rice in our province. The light damage can affect the fullness of the rice. In severe cases, the rice plant loses its weight and loses its weight and seriously affects the rice yield. At present, it has become one of the major rice pests in our province. In 1970, the Institute once conducted a survey on the occurrence of the brown planthopper, and found out that it is not the brown planthopper but the brown planthopper and the brown planthopper that winter on the grass. After feeding, the brown planthopper in the grass can not complete the whole process of its development, and the brown planthopper and the brown planthopper can not live in rice. In 1973 and 1974, we were in Yu Xia, Xiaoshan County Commune Yu team, on the occurrence of brown planthopper and control methods were investigated. In the annual occurrence of generations, growth and decline in the field, as well as control methods, made some early