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4.病虫防治翠冠梨主要病害是锈病、轮纹病、黑星病、黑斑病、腐烂病等,每年2月底～3月初萌芽前喷5度石硫合剂,以除灭越冬病菌。冬季做好清园作业,将病叶、病果和病枝集中烧毁或深埋土中,减少病源。防治锈病,在谢花后的4月下旬开始至5月上旬喷15%三唑酮可湿性粉剂1000～1500倍液,或用浙江省农科院生产的新农药灭锈胺1000～1500倍液,或用40%杜邦福星8000～10000倍液,交替使用2～3次。其他病害可用
4. pest control Cuiguan pear main diseases are rust, rotundus, scab, black spot, rot disease, etc., by the end of February ~ early March spray 5 degrees stone sulfur mixture before germination in order to eliminate overwintering germs. Good job in Qingyuan Park in winter, the diseased leaves, diseased fruit and diseased branches concentrated burned or buried in the earth, to reduce the source. Prevention of rust in the late April to late May to spray spray 15% triadimefon WP 1000 to 1500 times the liquid, or the use of Zhejiang Academy of Agricultural Sciences, the new pesticide production of 1000 to 1500 times the rust solution , Or 40% DuPont Fu Star 8000 ~ 10000 times the liquid, alternately used 2 to 3 times. Other diseases are available