怎样防治棚室番茄的烂果病

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温室大棚栽培番茄,常会出现烂果现象。引起番茄烂果的原因一是菜田土壤干旱缺水,致使幼果缺水发生脐腐病。二是果实膨大期间施肥欠科学,多氮肥而磷钾肥不足,尤其是缺乏钙肥,而严重阻碍幼果脐部细胞正常的生理活动,无法形成果脐钙,使果实抵抗外界不良环境条件的能力减弱? Greenhouse cultivation of tomatoes, rotten fruit often appear phenomenon. Rotten fruit caused by the first reason is the vegetable field drought aridity, resulting in juvenile lack of water occurs umbilical rot. The second is the lack of scientific fertilization during the fruit enlargement, more nitrogen fertilizer and phosphorus and potassium deficiency, especially the lack of calcium, while seriously hinder the normal physiological activity of young umbilical cells can not form umbilical calcium, the fruit resistance to adverse environmental conditions ability Weakened?
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