白兰花叶子发黑怎么办

植物图片 2020-01-04 20:07

白兰花的叶子发黑，可能是环境不通风造成的，需改善通风环境养护，浇水过多需减少浇水量，可每隔5天浇一次水，施肥过多需更换土壤，每隔半个月施一次饼肥，光照过强需搬移到散光处养护，患上病害喷洒对应药剂防治就可以了。

1、环境通风

白兰花对环境要求比较高，如果平时将白兰花摆摆在通风不好的环境下养护，很容易使白兰花叶子发黑，需要将其立刻搬移到通风处养护，使白兰花的叶子恢复过来。

2、减少水量

白兰花比较耐旱，平时如果浇水过多会使白兰花积水烂根，从而造成白兰花叶子发黑，需要减少浇水量，并剪掉烂根部重新养护，平时可每隔5天浇一次水就可以了。

3、控制肥量

施肥过多也会影响白兰花生长，造成白兰花叶子发黑降低白兰花的观赏价值，需要立刻给白兰花换土壤，控制好施肥量细心养护，通常春秋可每隔半个月施一次饼肥，使白兰花生长的更有观赏价值。

4、遮阴防晒

平时需要给白兰花充分的光照，使其生长的更有观赏价值，不过如果在夏天强烈的阳光下，很容易使叶子脱水并发黑，需要将白兰花搬移到阴凉处细心养护，使叶子逐渐恢复生机。

5、病害防治

白兰花叶子发黑也可能是患上了黄化病、炭疽病等病害造成的，需要立刻将病枝病叶全部剪掉，并改善生长环境，加强对白兰花的浇水施肥管理，并喷洒对应药剂防治病害。

专题： 白兰花
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