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1缺钙 生长期间叶缘黄化，叶片向外翻卷呈伞状，中午叶片向内卷，傍晚恢复，植株生长缓慢是缺钙的表现。产生这种现象的原因是有机肥施用量少，化肥施用量过多，由于离子拮抗作用，或土壤干旱，而影响钙的吸收。应及时浇水，并喷施0.2％～0.3％氯化钙溶液1～2次。基肥结合整
1 Calcium growth during leaf margin yellowing, the leaves rolled out umbrella was umbrella, noon leaves curled up, early evening, slow plant growth is the manifestation of calcium deficiency. The reason for this phenomenon is that the application amount of organic fertilizer is small and the amount of chemical fertilizer is excessive, and the absorption of calcium is affected due to ion antagonism or soil drought. Watering should be promptly, and spraying 0.2% ~ 0.3% calcium chloride solution 1 or 2 times. Basal fertilizer combined whole