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苹果腐烂病是苹果的一种重要枝干病害,近几年来,我们采用休眠期、生长期于枝干喷(刷)40％福美砷的防治方法,取得了良好的防治效果。我社大蔡大队一九八一年前26年生树913棵中,因腐烂病刨掉160棵,树冠残缺三分之一的255棵,树冠残缺二分之一的439棵,树冠比较完整的只有69棵,发病株率高达90％以上。从一九八一年春季开始,于早春喷布100倍福美砷,六月下旬至七月上旬主干喷1～2遍50～100倍福美砷;在专人常年坚持刮治的同时,用50倍砷平液对病疤消毒,腐烂病显著减轻。一九八二至一九八三两年调查,病株率分别下降为34.9％和26.8％;每株平均有病疤0.41块和0.33块;其中主干发病(包括三大主枝基部,生长季节施药部位)占
Apple rot disease is an important branch of apple disease, in recent years, we use the dormant period, the growth period in the branch spray (brush) 40% of the United States arsenic prevention and control methods, and achieved good control effect. The large Cai Cai Brigade of our society, in 1981, had 913 trees of 26 years old, with 160 rotten diseased plants, 255 trees with one-third crown defects, 439 trees with one-half crown defects, and a complete crown Only 69, the incidence of strains as high as 90%. From the spring of 1981, 100 times of Fumei arsenic was sprayed in early spring, and 50 to 100 times of Fumei arsenic was sprayed once or twice in the main jet from late June to early July. In the meantime, Arsenate on the scar scar disinfection, decay disease significantly reduced. From 1982 to 1983, the diseased plants rate dropped to 34.9% and 26.8% respectively; 0.41 and 0.33 lesions per plant were found on average. Among them, the incidence of trunk disease (including the three main branches, the growth season Application site) accounted for