【摘要】 白背飞虱在我省常大发生,给水稻造成严重的为害。 本文根据1979—1981年在贵州省贵阳地区进行白背飞虱越冬及迁飞的观察结果,用大量新事实证明白背飞虱是迁飞的害虫。其迁飞规律为:春季白背飞虱长翅成虫随气流由西南迁入;夏季白背飞虱长翅成虫随气流往东北迁出,与此同时也有白背飞虱长翅成虫随气流由东南或西南迁入的;秋季白背飞虱长翅成虫随气流由东北迁入(回迁),与此同时也有白背飞虱长翅成虫随气流往西南迁出的。 本文还探讨了有关白背飞虱迁飞的一些问题。更多还原

【Abstract】 Evidences obtained from many aspects of investigation have proved that the white back planthopper Sogatella furcifera can not overwinter under the climatic conditions of Guiyang. Immigration of the long winged adults had been found in rice culture pots set on the roof, the top and foot of a mountain, or in the orchard, the vegetable plot, the flower nursery and the grassland in 1979, 1980 and 1981.In the same years, the long winged adults moved out from rice fields and feeding cages had been seen in the morning and evening of a day. Especially, in fine days or during the node-elongating stage of the rice plant, in the rice field with dense pests, and the adults 2-3 days after eclosion, emigrants occurred in larger quantity.Results of experiments showed that starvation folerance of this pest varied from 4.8 to 7.35 days according to the difference in temperature and sex.It had been observed that the pests immigrated into Guiyang in the spring. But in the summer, a great nunber of the adults moved out while there some immigrated too. In the autumn, a great number of long winged adults immigrated while somemoved out.更多还原