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198 9年广东省从日本引进花角蚜小蜂成功控制了检疫性害虫松突圆蚧灾情。 1998年后放蜂区花角蚜小蜂种群急剧下降、数量大幅度减少 ,后因小蜂种源缺乏放蜂工作中断 ,致使松突圆蚧虫口密度逐渐上升 ,灾害日益严重。本文结合花角蚜小蜂的生物学特性及影响花角蚜小蜂种群稳定的因素 ,从气温、寄主、种源 3个方面初步探讨广东松突圆蚧花角蚜小蜂种群下降的原因
198 9 years Guangdong Province from Japan to introduce aphid queen bee successfully controlled the quarantine pest pine crape myrtle disaster. After 1998, the population of the small-headed bee Aphid popularized in the area of bee-eaters decreased sharply and the number decreased significantly. After the lack of bee-feeding work was interrupted by the provenance of bees, the population density of P. crassiphylla increased gradually and the disasters became more and more serious. In this paper, the biological characteristics of Aphis gossypii and their influence on the population stability of Aphis gossypii were studied in this paper. The reasons for the decrease of the population of Aphis gossypii from the temperature, host and provenance were discussed