1.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,以春季一次和秋季一次为宜。辽宁地区春季在3月中旬,秋季在9月上旬。 1. Since 1971, after five years of pesticide control trials, it has been found that 40% of the biodegradable arsenic pesticides prevent and cure apple tree rot disease and have good eradication effects. Spraying that year can reduce the incidence of about 50% for many years spraying, the incidence can be reduced year by year. 2. Fu Mei Arsenic agents, mixed with penetrating agent, can improve the control effect. 3. Spray concentration, the United States arsenic spring spray spraying should be 200 times the liquid, autumn 500 times. 4. In the spray period, once in spring and autumn is appropriate. Liaoning in spring in mid-March, autumn in early September.