君子兰黄叶怎么办

植物图片 2021-04-15 08:52

适当的光照：强光曝晒后君子兰易生黄叶，需给予散光或进行遮光；减少水量：积水会影响根系呼吸，需改变浇水方式，见干再浇；适当施肥：肥料太浓或是未经发酵会导致黄叶，需使用腐熟肥料或适当稀释。若是正常老化，将黄叶剪去即可。

1、散光照射

原因：君子兰是半阴性植物，在强光下曝晒会导致其灼伤叶片，进而叶子发黄。

解决方法：可将植株从阳台等强光照射的地方移动到光线相对柔和的位置，或者进行遮光处理。

2、补充光照

原因：君子兰喜光又怕强光，若光照不够，会导致植株光合作用不足，生长缓慢，叶片变黄。

解决方法：要保证一定的光照时间，冬天时可将君子兰长时间放置在见光处，在炎热的夏季，可将其放置在北边窗户旁，早晚见光即可。

3、减少水量

原因：浇水过多会导致盆内积水，植株根系呼吸不畅、缺氧，导致生长不良、叶子发黄。

解决方法：浇水时，一次浇透，见干再浇。若一次浇水过多，可将植株移至通风干燥处或将花盆垫高，加快水的挥发速度。

4、适当施肥

原因：肥料浓度过大或直接施生肥，会灼烧植株根系，导致黄叶。

解决方法：将饼肥等稀释或将生肥沤熟后，加入到盆土中，减少施肥的次数。

5、注意事项

（1）防止病虫害：若植株遭到病毒侵害，会导致局部变黄，产生黄斑，要及时喷洒药物。

（2）正常生长：君子兰在3年后会正常衰老，外部叶片变黄是正常现象，只要将老化的外层叶片剪去即可。

专题： 君子兰
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