近几年,套袋苹果因缺钙而发生的苦痘病有逐年加重的趋势。粗略统计,我地套袋红富士苹果平均发病率达20％以上,严重地块达92.7％,套袋重病单果有病斑41块之多,商品价值丧失,经济损失严重。为此,我们进行了几年的试验研究,初步掌握了该病的防治技术,收到了明显效果。现简介如下: 1.改良根际土壤环境 施用钙镁磷肥或过磷酸钙,应先与厩肥、鸡粪等土杂肥混合沤制后再用,对个别pH值较低、酸性较强的果园,可适量 In recent years, bagging apple due to calcium deficiency occurred bitter pox disease has increased year by year trend. Rough statistics, my bagging red Fuji apple average incidence of more than 20%, 92.7% of the blocks in a serious, bagged sick single fruit as many as 41 spots, the loss of commodity value, serious economic losses. To this end, we conducted a number of pilot studies, preliminary mastered the prevention and treatment of the disease technology, has received significant results. The brief introduction is as follows: 1. Improve the rhizosphere soil environment application of calcium magnesium phosphate or superphosphate, should first mixed with manure, chicken manure and other soil mixed fertilizer system and then reuse, the individual low pH, acidity orchard , May be appropriate