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灰豆象Callosobruchus phaseoli(Chevrolate)是我国尚无分布的危险性害虫。我们于1984年底至1986年在我所室内对来自澳大利亚扁豆中的灰豆象进行了饲养观察。现将初步观察结果整理如下。发生历期和越冬代:灰豆象在昆明地区一年最多发生6代,以幼虫在豆粒内越冬。灰豆象幼虫对低温的忍受有一定限度,2龄幼虫在低于14.6℃条件下,不能越冬。卵期:在恒温26℃,卵期为7.6天,32℃为6天,35℃为7天,受温差影响幅度不大。昆
Gray asbestos Callosobruchus phaseoli (Chevrolate) is not yet distributed in our country a dangerous pest. From the end of 1984 to 1986, we kept the gray-bean weevil from the Australian lentils in our lab. The preliminary observations are now organized as follows. Occurrences and overwintering generation: gray beans as many as six generations a year in Kunming, larvae in the winter grain beans. Gray bean larvae bear the low temperature has a certain limit, 2nd instar larvae in less than 14.6 ℃ conditions, can not wintering. Egg stage: In the constant temperature of 26 ℃, the egg period of 7.6 days, 32 ℃ for 6 days, 35 ℃ for 7 days, affected by the temperature difference is not large. Kun