天气预报 > 其他 > 葡萄树的叶子为什么发黄
葡萄树的叶子为什么发黄
更新时间: 2020-06-30 00:00:00  

浇水过多,盆土长期过湿,造成土中缺氧,使部分须根腐烂,阻碍正常呼吸和水分养分的吸收,引起叶片变黄脱落。受害后先是嫩叶变成淡黄色,继而老叶也渐渐发黄,应立即控制浇水,暂停施肥,并经常松土,使土壤通气良好。干旱脱水。养花漏浇水或长期浇半腰水,影响养分吸收,也易引起叶色暗淡无光泽,叶片萎蔫下垂。先是下部老叶老化,并逐渐由下向上枯黄脱落。此时需少量浇水并喷水,使其逐渐复原后再转入正常浇水。长久脱肥。长期没有施氨肥或未换盆换土,土中氮素等营养元素缺乏,导致枝叶瘦弱,叶薄而黄。需及时倒盆,换入新的疏松肥沃的培养土逐渐

关键词: 葡萄 叶子 为什么 发黄

葡萄树的叶子为什么发黄相关经验

天气预报

最新推荐

页面:/news/view-2190773/ | 耗时:0.4800 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=2190773 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2190773 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2190773 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1054676,1084445,1049870,1104657,1103851,1074851,1086338,1094815,1103285,1071749,1044442,1109499,1112058,1095063,1094057,1112841,1079950,1093799,1080098,1104951,1063181,1085154,1070824,1087481,1095578,1077639,1108237,1048878,1064249,1089064) ORDER BY field (ArticleID,1054676,1084445,1049870,1104657,1103851,1074851,1086338,1094815,1103285,1071749,1044442,1109499,1112058,1095063,1094057,1112841,1079950,1093799,1080098,1104951,1063181,1085154,1070824,1087481,1095578,1077639,1108237,1048878,1064249,1089064)