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毛娟叶子发黄怎么办
更新时间: 2020-09-06 00:00:00  

原因:

1、水:水浇过多导致土壤积水久湿,透气性差甚至部分须根腐烂,表现出嫩叶暗黄无光泽,新梢萎缩;

2、肥:施肥过多,表现为老叶枝尖变黄脱落,新叶虽肥厚有光泽但一般凹凸不舒展;

3、旱:长期未浇透水或脱水,新叶虽叶色正常,但下部叶片渐向上干黄脱落老化;

4、碱:南方花卉喜酸性土壤,而北方水质偏碱则出现叶子渐退色变黄甚至脱落。

解决办法:

1、盆土表面发干时浇透水;

2、生长期间半个月施一次氮肥可使叶色浓绿并饱满厚实;

3、置于阳光充足的地方养护。

关键词: 叶子 发黄 怎么办

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