l、从1971年以来,经过五年的药剂防治试验,看出40％福美砷药剂防治苹果树腐烂病,具有较好的铲除效果。喷药当年可减少发病率50％左右,连续多年喷药,可逐年压低发病率。 2、福美砷药剂,混用平平加渗透剂的可提高防治效果。 3、喷药浓度上,福美砷春季喷用,应以200倍液,秋季为500倍液。 4、在喷药时期上,以春季一次秋季一次为宜。辽宁地区春季在3月中旬,秋季在9月上旬 l, since 1971, after five years of pesticide control experiments, we can see that 40% of the biodegradable arsenic pesticides against apple tree rot disease has a good eradication effect. Spraying that year can reduce the incidence of about 50% for many years spraying, the incidence can be reduced year by year. 2, Fumei arsenic agents, mixed with penetrating agent can increase the control effect. 3, spray concentration, the United States arsenic spray spraying spring should be 200 times the liquid, autumn 500 times. 4, in the spraying period, once in spring is appropriate once autumn. Liaoning in spring in mid-March, autumn in early September