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据研究报导,苹果苦痘病发生的轻重与钙含量的多少是密切相关的。研究表明,沙土上施用石膏,常可减轻苦痘病的发生。每年一公顷施用3,000公斤石膏,可明显降低土壤的镁含量。在多种土壤上喷钙也均减轻苦痘病的发生。而硝酸钙特别有效,一季喷5次。可减轻苦痘病80％,乳酸钙与醋酸钙则效果较小。在喷布时间上,晚喷的比早喷的效果好。采取后将果实侵入0.75％或1％的氨化钙或硝酸钙中,可使苦痘病减轻50％。喷布钾或镁,有增加苦痘病的倾向,喷硝酸镁,使果实发生凹陷,和苦痘病相似。
According to research reports, apple bitter pit disease severity and the amount of calcium is closely related. Studies have shown that the application of gypsum on the sand can often reduce the occurrence of bitter pit disease. Applying 3,000 kg of gypsum per hectare a year can significantly reduce the magnesium content of the soil. In a variety of soil spray calcium also alleviate the occurrence of bitter pit disease. The calcium nitrate is particularly effective, spray 5 times a season. Can reduce bitter pox disease 80%, calcium lactate and calcium acetate is less effective. In the spray time, late spray better than the early spray effect. After taking the fruit invaded 0.75% or 1% of calcium amide or calcium nitrate, bitter pox disease can reduce 50%. Spray potassium or magnesium, the tendency to increase bitter pit disease, spray magnesium nitrate, so that the fruit depression, and bitter pit disease similar.