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本文对杨树毛蚜的综合防治作了如下报道:1、异色瓢虫及其变种(变型)和七星瓢虫成熟时开始迁飞到邻近的毛白杨苗园、幼林内。由于瓢虫数量急剧增多、食蚜量大,致使两种毛蚜种群数量大幅度下降;夏、秋季节,在毛白杨上作为控制因子的瓢虫却寥寥无几,此时如遇干旱,气温偏高,毛蚜则日渐增多、猖獗成灾。7、8月份多雨。可控制毛蚜的大发生。2、化学防治可采用3％呋喃丹和15％铁灭克根埋施药。经试验两种药剂均为0.5克/株,在施药后第10天即有显著的防治效果,但后者较3％呋喃丹药效发挥快,效果更显著。
In this paper, the comprehensive control of A. gossypii has been reported as follows: 1, Harmonia axyridis and its variants (variant) and Coccinella septempunctata began to migrate to neighboring Populus tomentosa seedlings, young forest. Due to the rapid increase in the number of ladybugs and the large amount of food aphids, the population of two kinds of moths significantly decreased. In the summer and autumn, there were only few ladybugs as control factors in the poplar trees. In the case of drought, High, hairy aphids are increasing, rampant disaster. 7, August rainy. May control the occurrence of hairy aphids. 2, chemical control can be used 3% carbofuran and 15% iron Keke root buried drug. The two agents tested were 0.5 g / plant, the first 10 days after application that have significant control effect, but the latter than 3% carbofuran efficacy play faster, the effect is more pronounced.