近些天收到兰友的咨询,说自己的君子兰新出来叶子越来越窄是怎么回事?这个问题有多种原因,是家庭养君子兰和新手常遇到的问题,入手时的叶子快窄均匀,越养叶子越窄。有自然条件和缺水肥两大原因几个方面造成的。自然条件是新叶刚出来遇到夏季高温和秋后低温,新出来的叶子不能正常生长,会变的短,窄,硬,皱。缺水肥新叶供应不足,生长迟缓,变窄变薄,细长。根系不好,没有新根系滋生,新叶对照新根,新根出不好,新叶是长不好的,这就是盆养花需要换土施肥的原因。换土时不要多加肥,肥大了,刺激新根,腐蚀老根,容易烂根,水化,烧根,要把用肥有计划,少用勤施,前劲用不完,后劲跟上,新叶就不会变窄变短变薄。新出来叶子正常情况下会宽过老叶,君子兰的老叶是叶柄,叶子的叶面是宽于叶柄的。我现在正在换土,旧花土用一半,新花土一半,加点有机肥,带壳的植物种子果核,旧花土里的残留肥正常供应一段时间,新的肥正好补上去。生长期没有迟缓和停迟。兰友们,老师们都有自己的养护措施,要多学习多交流,就会提高养护经验。
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