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煤焦油乳剂为消灭果树害虫越冬卵的有效药剂,国外已有六十余年的使用历史,我们今年在青岛用蒽油乳剂(北京石景山钢铁厂炼焦煤之付产品)原液6 分加肥皂1分,水3分(下能用硬水),配制后,初步测定了蒽油乳剂对数种果虫的防治作用,效果均良好,兹摘要介绍如下:一、苹果红蜘蛛、苹果黄蚜虫室内杀卵试验:
Coal tar emulsion for the elimination of fruit pests overwintering eggs effective agents, foreign countries have been more than 60 years of history, this year we use anthracene oil emulsion (Beijing Shijingshan Iron and Steel Coking Coal to pay products) stock solution plus 6 points 1 point soap , Water 3 points (hard water can be used under), after the preparation, the initial determination of anthracene oil emulsion on the prevention and treatment of several kinds of fruitworms, the effect is good, hereby summarize as follows: First, the apple red spider, yellow apple aphid indoor kill eggs test: