1960年以前,湖南各柑桔产区,应用松碱合剂防治吹绵介壳虫,一般在第一代若虫盛孵期和盛孵末期(6、7月),正值幼果生长和夏梢抽生阶段。但是此时常遇干旱,温度高,湿度小,消灭虫害不彻底,且易发生药害。 1961年,我们进行冬季防治试验,收到了较好的效果。1962年,大面积推广,基本上消灭了吹绵介壳虫,柑桔产量比1961年增产一倍。 Before 1960, citrus production areas in Hunan, the application of pine-alkali mixture to control blowing scale insects, usually in the first generation of nymph Sheng Sheng Sheng and incubation period (6, July), at a time when young fruit growth and summer shoot pumping Health stage. But this time often encounter drought, high temperature, humidity, insecticide is not completely eliminated, and prone to injury. In 1961, we conducted the winter prevention and control test and received good results. In 1962, large-scale promotion basically eliminated the scale insects, citrus output doubled than in 1961.