四季梅叶子发黄原因及处理方法

植物图片 2019-11-01 10:24

在小编印象中的四季梅是嫩枝顶端，每长出一叶子，叶腋间即冒出两朵花，而且花朵特多，花期特长，花势繁茂，生机勃勃，从春到秋开花从不间断，当时我家小院有了四季梅的点缀真可谓是一年四季都美美哒。但美丽的四季梅在生长期也难免会出现叶子变黄现象，下面小编带大家一起来了解下四季梅叶子发黄的原因及其如何养护好四季梅。

四季梅叶子发黄

四季梅叶子发黄原因及正确做法：

1、浇水过量；浇水太多，盆土通气性差造成的叶子蔫了。四季梅忌湿怕涝，盆土浇水不宜过多，过湿影响生长发育。露地栽培，盛夏阵雨，注意及时排水，以免受涝造成整片死亡。

正确的方式：最好遵循忌湿怕涝、不干不浇、浇则浇透三大原则。

2、土壤选择；有些花友可能就会不注意一个小细节，给四季梅用上了偏碱性、板结、通气性差的黏质土壤，结果造成四季梅生长不良，叶子发黄。

正确的方式：宜肥沃和排水良好的壤士，耐瘠薄土壤。

3、光照不足；四季梅为喜光性植物，生长期必须有充分阳光，叶子苍翠有光泽，花色鲜艳。若长期生长在荫蔽处，叶子发黄落叶。

正确的方式；四季梅的适合生长气温在20°以上，需要全日照环境，出苗后在光线强、气温高的中午，需加遮荫2～3小时。

4、换土操作不当；换土过程中四季梅原先的生长条件受到了影响，根系可能部分受损，不能及时、足够地向枝叶提供养分，就会有部分叶子提早衰老，枯焦落叶，以达到供需平衡，维持生命。

正确的做法：

对于刚刚换土的四季梅，由于根须比较脆弱，所以尽量把它摆在尽量阳光不会直射的地方，同时浇水的次数不要太多。保证四季梅有几天的恢复期。

美丽的四季梅

5、病虫伤害；若四季梅不注意通风，长期置于阴暗处等会造成有叶腐病、锈病和根疣线虫的长成，长期有害虫也会造成四季梅叶子变黄。

正确的做法：

对于叶腐病用65％代森锌可湿性粉剂500倍液喷洒。锈病用50％萎锈灵可湿性粉剂2000倍液喷洒。根疣线虫用80％二溴氯丙烷乳油50倍液喷杀防治。

6、施肥不当；施肥过多、施肥时直接浇到叶子上这些原因都会造成四季梅叶子严重变黄。而且由于生长期间开花不断，需要大量的肥料，所以要经常施肥，最好选择三元或多元性的肥料，否则会因缺乏氮素而黄叶。

正确的做法：生长季节每30天左右施追肥1次，而且记得要随时注意浇水哦！这样有助于盆土的吸收。

四季梅的养护要点：

雪白的四季梅

1、为促进分枝，从定植至8月中旬应进行2-3次摘心，如此即可花繁叶茂。越冬气温10-12℃。长春花播种，当气温升到10C左右时开始播种，幼苗长出4-5对真叶时移植1次，也可于春天取越冬老株上的嫩枝进行扦插。易于管理。

2、四季梅多采用播种繁殖。早春播种，幼苗早期生长缓慢，待幼苗长到3片-4片真叶时，开始分苗移栽，具有6-8对真叶时即可定植。五月份定植花坛中，隔3天-5天浇水一次，适度追施磷钾肥，则花多叶茂。

3、栽培四季梅幼苗具3对真叶时移栽到10厘米盆，每盆3株。苗高7～8厘米时摘心1次，以后再摘心2次，这样可以促进多萌发分枝，多开花。生长期每半月施肥1次，或用15－15－30的"卉友"盆花专用肥。

专题： 四季梅
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