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石油乳剂在国内外用来防治果树和园林害虫及介壳虫的历史悠久。我国桔区,当前大多采用化学农药和松脂合剂防治柑桔螨、蚧类害虫。但由于有机化学农药毒性高,容易杀伤天敌和导致害虫抗性的产生,松脂合剂受到原料不足及配制、使用较烦琐的限制,也不能大量采用。近几年来,我们选用了由浙江省宁海化肥厂有机分厂生产的石油乳剂,对柑桔几种主要病虫进行了试验应用,结果表明杀虫防病效果非常显著,现叙述于下。
The history of petroleum emulsions used to control fruit trees and garden pests and scale insects at home and abroad has a long history. In China’s citrus region, most of the current use of chemical pesticides and pine fat mixture to prevent citrus mites, scale insects. However, due to the high toxicity of organic chemical pesticides, easy to kill natural enemies and lead to the emergence of pest resistance, loose rosin mixture by the lack of raw materials and preparation, the use of more cumbersome restrictions, can not be used in large quantities. In recent years, we have chosen the oil emulsion produced by the organic branch of Ninghai Fertilizer Plant in Zhejiang Province to test the application of several major diseases and pests of citrus fruits. The results show that the effect of insecticide and disease prevention is very significant and the description is given below.