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利用大红瓢虫防治吹绵蚧,在浙江黄岩及湖北宜都等地成功后,1955年,又在四川同样得到很好效果。近几年在四川各地吹绵蚧发生区域均获得优异结果,证明它确实有效,且生效相当迅速。大红瓢虫适应的温度范围较狭,在四川有效期是5—9月。它对寄主植物亦有选择。引移老熟幼虫、直接野外繁殖、早放虫,选蚧多、叶茂处集中发放等是成功的利用技术。人工越冬必须备足食料,注意温度不超过85%。人工饲料可以解决保种及越冬期食料供应不足的问题。利用大红瓢虫防治较化学防治优越。今后歼除吹绵蚧的工作,仍应采用天敌、化学药剂及检疫三者相结合的综合措施。
The use of red ladybug control blowing cotton Kuwana, Zhejiang Huangyan and Yidu, Hubei success, in 1955, again in Sichuan have been very good results. In recent years, all areas in Sichuan blowing cotton melatonin have achieved excellent results, it proved to be effective, and effective quite quickly. Red ladybug to adapt to the temperature range is narrow, valid in Sichuan is from May to September. It also has a choice of host plants. Induction of mature larvae, the direct field breeding, early release of pests, electing more scales, Ye Mao office, such as the issuance of a successful use of technology. Overwintering artificial food must be sufficient, pay attention to the temperature does not exceed 85%. Artificial feed can solve the problem of lack of supply of food during winter and overwintering. The use of red ladybug prevention and control superior to chemical control. In the future, to eliminate the blowing of mealybugs, comprehensive measures should still be adopted that combine natural enemies, chemical agents and quarantine.