氮(N)是植物从土壤中吸收最多的元素。它能刺激地上植被生长,保持植被绿色。草坪缺氮时,叶片发黄,生长缓慢。 磷(P)是植物苗期生长和根系生长必需的元素。植物缺磷首先表现在植株低矮,类似叶绿素缺乏症,绿色渐深或变成红色。磷素可由土壤中的矿物质分解而来,但数量有限,因此,在草坪生长过程中需补充一定的磷肥。 Nitrogen (N) is the element that plants absorb most from the soil. It can stimulate the growth of aboveground vegetation and keep the vegetation green. Turf nitrogen, the leaves yellow, slow growth. Phosphorus (P) is an essential element in plant growth and root growth. Plant phosphorus deficiency first manifested in plant low, similar to chlorophyll deficiency, green gradually deepened or turned red. Phosphorus can be decomposed from minerals in the soil, but the quantity is limited. Therefore, some phosphorus fertilizer needs to be supplemented during the lawn growth.