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我省使用飞机防治松毛虫,由于长期连续使用二二三、六六六混合剂,害虫抗药性逐步增强,药液浓度不断加大,杀虫效果反逐渐降低。特别是这种农药毒性较大,残毒危害严重,喷药后,不但大量杀伤林间害虫天敌,还常毒死附近池塘水库的鱼,有时甚至造成人畜伤亡事故。为了提高飞机治虫效果。减少残毒危害,保障人畜安全,1976年在茅山林区飞机防治越冬代松毛虫期间,与常州市茅山林场、句容县磨盘林场、金坛县林场合作,选用了几种农药进行飞机喷雾试验。1977年结合飞机防治松毛虫,与江宁县东善桥林场合作,又进行了马拉松飞机喷雾防治松毛虫的中间试验。现将两年试验结果整理于下:
In our province, the plane was used to prevent and cure pine caterpillars. Insecticide resistance gradually increased as a result of long-term continuous use of two hundred twenty-three and six hundred and sixty-six mixture, and the concentration of the drug solution continued to increase while insecticidal effect gradually decreased. In particular, the pesticide is more toxic and has a serious harm to its residues. After spraying, it not only massively kills the natural enemies of pests in the forest, but also often poison the fish in ponds and reservoirs near the reservoirs, sometimes causing human and animal injuries. In order to improve the aircraft worm effect. Reduce the damage caused by residual poison and ensure the safety of human and livestock. During the winter control and overwintering of the pine caterpillars in Maoshan Forest Area, cooperated with Changshan Maoshan Forestry Center, Mopan Forest Farm of Jurong County and Jintan Forest Farm, and selected several kinds of pesticides for aircraft spraying test. In 1977, the plane was used to control pine caterpillars. In cooperation with Dongshanqiao Forest Farm in Jiangning County, an intermediate test was conducted to control pine caterpillars by spraying marathon aircraft. Now two years of test results in the next order: