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详述了李树细菌性穿孔病在浙江云和县的危害状况 ,应用化学防治与农耕防治相结合的方法 ,有效地控制了该病危害
Detailed description of bacterial pteri perforation in Yunhe County, Zhejiang Province, the damage status, the application of chemical control and combination of agricultural prevention and control methods to effectively control the harm of the disease