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褐飞虱 Nilaparvata lugens St(?)l 和白背飞虱 Sogatella furcifera Horuath 为我国稻区的重要害虫,常年混合发生。从田间调查的情况看,两种飞虱的生活习性包括栖息分布和产卵行为等皆有一定的差异,尤其表现在稻株上的垂直分布。为探讨它们在水稻上的垂直分布和相互关系,为稻飞虱田间虫量调查和预测预报提供理论依据,作者于1990年在浙江农科院养虫室进行了有关的研究。材料和方法1.品种和虫源:供试品种为处于分蘖期的粳稻秀水48,试验时稻株的平均高度为46cm,地面到心叶基部的平均高度为15cm。褐飞虱和白背飞虱皆于当年7月采自浙江龙游田间,饲养一代后供试验用。
Nilaparvata lugens St (?) L and Sogatella furcifera Horuath are the major pests in the rice area of China and are often mixed together. According to the field survey, there are some differences in the habits of the two planthoppers, including habitat distribution and spawning behavior, especially in the vertical distribution of rice plants. In order to investigate the vertical distribution and interrelationship between them in rice, and to provide a theoretical basis for the survey and forecast of rice planthoppers in the field, the author carried out the related research in the rearing house of Zhejiang Academy of Agricultural Sciences in 1990. MATERIALS AND METHODS 1. Varieties and insect sources: The tested varieties were the japonica rice Xiushui 48 at the tillering stage. The average height of the rice plants was 46 cm and the average height from the ground to the base of the leaf was 15 cm. Brown planthopper and white-backed planthopper were collected from Longyou Farm in Zhejiang Province in July of the same year for breeding purposes.