自从大面积推广苹果套袋技术以来,苹果黑点病的发生便愈来愈重,很多专家、果农认为黑点病是缺钙、郁闭、施氮肥过多、杀菌药喷不好、雨天过多、袋的质量差、粉红聚端孢菌等原因所致。我们2001~2004年在运城市盐湖区姚孟乡岳坦村路武 14 年生乔化果园(4 m×3m行株距)的实践表明, Since the large-scale popularization of apple bagging technology, the occurrence of black spot disease in apple will get heavier and heavier. Many experts think that black spot disease is calcium deficiency, canopy disease, too much nitrogen fertilizer, poor germicidal spray and rainy days More, the quality of the bag is poor, caused by the reasons such as pink polycnidazole bacteria. The practice of the 14-year-old Qia orchard (4 m × 3 m row spacing) in the 14th year of Luwu Village, Yumin Township, Yao Meng District, Yuncheng City from 2001 to 2004 shows that,