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国槐叶子发黄且落叶是怎么回事
更新时间: 2020-08-15 00:00:00  

一、介绍:槐树原产于中国,又叫中华槐,国槐;国槐枝叶茂密,造型漂亮,被广大园林人士所喜爱,是中国庭院常用的特色树种,也是城市绿化行道树和用材的优良树种;

二、一般国槐苗叶子发黄,多数情况是因为水肥不当引起的:

1、水黄是水浇得太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、肥黄是肥多,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、旱黄是由于国槐苗长期没浇透水或脱水,新叶虽叶色正常,但下部叶片渐向上干黄脱落老化;

4、碱黄是由于北方水质偏碱,出现国槐苗叶子渐退色变黄甚至脱落的现象;

三、可浇洒经过发酵的洗米水或雨水。

关键词: 国槐 叶子 发黄 落叶 怎么 回事

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