哪些水是可以浇花的?
哪些水是可以浇花的?家庭养花最常用的灌溉水是将自来水在阳光下放置2~3天后使用,但是我们在家庭养花中也常会遇到一些问题,比如说雨水、雪水以及一些生活废水,如淘米水等是否可以用来浇花?
浇花最好用软水,雨水、雪水及沉淀预贮过的自来水都是可以用来浇花的,其硬度低、杂质少、酸碱度适中,是最理想的浇花用水。雨水中的氧和氮化物含量较多,有助于花卉的生长。男外,雨水中含盐碱少,而盐碱不能随水分蒸发,是北方部分地区花卉生长的大敌。井水中的盐碱含量比较高,不适合浇花。因此,基本上无盐碱的雨水或融化后的雪水,是灌溉花卉的天然水资源。
一些养花的人,常常喜欢用喝剩的茶水、淘米水来浇花,认为这样在给植物浇水的同时,还能给植物补充养分,使它长得更为茁壮,其实这是不科学的。茶叶中含有许多生物碱,如茶碱、咖啡碱等,它们都会影响植物对土壤中有机养分的吸收,而其本身对植物的生长并没有多大的作用。另外,茶叶覆盖盆土表面,影响土壤的渗水和透气,还会腐烂发霉,招引虫害。
淘米水虽然含有养分,但只有经过发酵腐熟后才能被植物吸收,不然,当它深人土中在土壤中发酵后产生很多热量,会灼伤植株的根系。同时,发酵以后还会产生难闻的臭气,容易招引害虫,既有害于植株,又污染了环境。
要想利用这些废水,唯一的办法就是腐熟后再用。不过这样做会产生难闻的气味,很不适宜家庭居室采用。
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