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为了探索褐稻虱Nilaparvata lugens Stl起飞迁出的习性,1979年我们在衢县梧村公社田间自然条件下和室外用笼罩法,在双季早稻、单季中稻的黄熟期以及单季中稻灌浆期,分别对褐稻虱长翅型成虫迁飞习性有关的几个方面作了一些调查、观察。现将观察情况整理如下。 一、起飞概况 据7月下旬、8月下旬、9月中、下旬共18天,分期观察长翅型褐稻虱2,038头,起飞前,一般先从稻株基部逐渐向上爬行,直至稻株的中、上部,大部分停留20—60
In order to explore the habit of takeoff and removal of the brown planthopper Nilaparvata lugens Stl in 1979, we cultivated it under field natural conditions in the Wucun commune of Qu county and in the outdoor shrouding method in two seasons of early rice, yellow ripening of single-season middle rice, , Respectively, some of the aspects related to the migration habits of the long-winged adults of the brown planthopper, were investigated and observed. The observation is now organized as follows. First, the take-off overview According to late July, August, mid-September and late 18 days, 2,038 long-winged brown planthopper observed in phases, before take-off, generally from the base of the rice plant gradually climb upward until the rice plants Middle, upper, most stay 20-60