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将化肥按比例兑水稀释,用喷雾器喷洒于植物的地上部分,被植物的叶片直按吸收,称为根外施肥。这种施肥方法省肥,见效快,操作简便,在植物的整个生长时期都可进行。特别是当土壤条件不利于根部施肥,或刚移植的花木无法进行根部施肥时,采取根外施肥措施十分必要。根外施肥应严格掌握化肥与水的比例,浓度过低效果不明显,浓度过高则会给植株带来伤害。下面介绍几种化肥在作根外施肥时与水的比例:尿素
The proportion of fertilizer diluted with water, sprayer sprayed on the plant parts of the ground, plant leaves by direct absorption, known as the root fertilization. This fertilization method saves fertilizer, quick, easy to operate, can be carried out throughout the plant’s growth period. Especially when soil conditions are not conducive to root fertilization, or just transplanting flowers and trees can not be root fertilization, the application of extraterritorial fertilization measures are necessary. Root fertilization should be strictly controlled the proportion of fertilizer and water, the effect of low concentration is not obvious, the concentration is too high will bring harm to plants. Here are some of the fertilizer in the root when fertilizing fertilizer and water ratio: urea