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用石油防治柑桔介壳虫,最早见于民国二十四年(1935)《四川农业》二卷一号,江志道《川东害虫之调查》:“圆介壳虫,用石油乳剂之七至八倍撒布之”。其后,有关杂志、报刊断续作了类似乳剂加化学农药、加肥皂、加洗衣粉等为乳化剂的报道。1962年前后我县先锋、高牙、李市等地曾用类似乳剂防治蚧类害虫,但均由于“油水”不易混匀且系全树喷射,致部分果园新梢甚至老叶遭受不同程度的药害(“烧
Prevention and control of citrus calamari with petroleum, first seen in the Republic of China twenty-four years (1935) “Sichuan Agriculture” Volume II, Jiang Zhi Road, “Investigation of East Sichuan pests”: “Round scale insects, with petroleum emulsion seven to eight times Spread ”. Subsequently, the magazines, newspapers intermittent made a similar emulsion plus chemical pesticides, plus soap, plus washing powder as emulsifier reports. Around 1962, our county pioneered, high tooth, Li City and other places had similar creams for preventing and controlling scale insects, but all because of “oil and water” is not easy to mix and the whole tree spray, causing some of the orchard old shoots and even the old leaves suffered different degrees Injury ("burn