黄瓜缺素症及其防治

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黄瓜在生长发育过程中,往往由于缺乏某种营养元素,使植株营养代谢失衡,影响黄瓜品质和产量提高,并在植株外部表现出来缺素症状。1.缺氮症植株矮瘦、叶片小、叶色淡绿,下部叶片先变黄脱落,后逐渐上移。发病后,每666.7m2(亩)用尿素10~15kg混入10~15倍有机肥料中,施在植株两旁后覆土、浇水,应急时可用1-1.5%的尿素溶液每666.7m2(亩)50kg叶面喷洒。
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