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1缺钙症状钙是番茄生长发育不可缺少的微量元素之一。如果缺钙，番茄植株萎缩，上部叶片变黄，下部叶片保持绿色，生长受阻，幼芽变小黄化而死亡；幼叶面积减小，周围变揭，部分枯死；近顶部茎常出现枯斑，根粗短分校多，花少脱落多，顶花易脱落；番茄果实果脐处变黑，形成脐腐
1 Calcium deficiency symptoms Calcium is one of the indispensable trace elements of tomato growth and development. If calcium deficiency, tomato plants shriveled, the upper leaves turn yellow, the lower leaves remain green, growth is blocked, young shoots become smaller yellow and die; young leaves reduce the area around the exposed Jie, partially dead; , Stubby roots and more, spend less shedding, top flowers easy to fall off; fruit umbilical black, forming umbilical