黑龙江省亚洲飞蝗发生状况及生长积温和取食量研究

The Accumulated Temperature in the Growth Period, Feeding Amount and Occurrence Situation of Locusta migratoria migratory L.in Heilongjiang Province

为预测亚洲飞蝗的发生期和判断其危害程度,对其生长积温和取食量进行了研究。结果表明:一至五龄的蝗虫生长积温和取食量分别为351.13、306.79、340.92、399.00、470.24℃和5.46、8.91、14.40、27.44、56.32g;最佳防治时期为取食量小的一、二龄期;亚洲飞蝗的卵在-29.9℃可以成功越冬,在翌年继续发生;2011年,亚洲飞蝗在黑龙江省没有大面积发生。

The accumulated temperature in the growth period and feeding amount of Locusta migratoria migra- tory L. were investigated for predicting the growth period and estimating its harm degree. The result indicated that the accumulated temperature in the growth period and first to fifth instar feeding amount of Locusta mi- gratoria migratory L. , respectively in turn were 351. 13,306.79,340. 92,399.00,470.24℃ and 5.46,8. 91, 14.40,27.44,56.32 g;the best control period was the first or the second instar. The eggs of Locusta migrato- ria migratory L. could successful overwintering in -29.9℃ continue occurrence in the next year~ But large ar- ea occurrence didn＇t appear in Heilongjiang province in 2011.