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泸州地区自1954年从湖北宜都县引进大红瓢虫以来,已有6年饲养历史。目前已推广到7县一市的重要果园。对消灭吹绵介壳虫为害,减少大量药剂开支,保证柑桔连年增产,起到了显著作用。 吹绵介壳虫是泸州地区柑桔生产上的毁灭性害虫。据市郊1953年的调查,在被害的3万株柑桔中,有12,125株柑桔树每尺长的枝条上平均有棉虫73.8个。其中张沟果园有2,000株卽死去1,700株。当时果农曾向国家贷款3万余元,购买松脂合剂防治,但
Luzhou since 1954 from Yidu County, Hubei Province introduced red ladybug, has 6 years of feeding history. Has now been extended to seven counties and one city of important orchards. On the elimination of blowing scale insects harm, reduce the cost of a large number of drugs to ensure that citrus annual yield, played a significant role. Breathing scale insects is a devastating pest on the production of citrus in Luzhou. According to a survey conducted in the suburbs in 1953, of the 30,000 citrus trees harmed, there were an average of 73.8 cotton insects on 12,125 citrus trees per long branch. Among them, 2,000 plants in Zhanggou orchard died 1,700. At that time, farmers had loans to the state 3 million yuan, the purchase of pine resin mixture control, however