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一、演变过程 50年代前为粗放型防治,以人工物理方法为主,属无机农药时期。主要病害是腐烂病,在芝罘、牟平、福山等老果区表现严重。害虫主要是食叶性、体形大的虫,如毛虫等。 50～70年代腐烂病得到控制。褐斑病开始在我市沙滩和平地,炭疽病在山地果园发生。由于有机合成农药如DDT、六六六、1605、1059的大量使用,不仅杀灭了害虫,也杀灭了天敌,破坏了果园的生态平衡。桃小食心虫在我市莱阳、栖霞、蓬莱以东以南的山地果园开始发生。绵蚜、瘤蚜、螨类、蚧类、
First, the evolution of the 1950s before the extensive prevention and control, mainly artificial physical methods, is an inorganic pesticide period. The main disease is rot disease, in Zhifu, Muping, Fukuyama and other old fruit area performance is serious. Pests are mainly leafy, large shape insects, such as caterpillars. The rot disease was controlled from 1950s to 1970s. Brown spot begins in the peaceful beach of our city, anthracnose occurs in the mountain orchard. Due to the extensive use of organic synthetic pesticides such as DDT, BHC, 1605 and 1059, they not only kill pests but also kill natural enemies and destroy the orchards’ ecological balance. Peach small heart worms in the city of Laiyang, Qixia, Penglai south of the mountain orchard began to happen. Cotton aphid, aphids, mites, kites,