植物除了需要水分、二氧化碳和日光之外,还需要从土壤中吸收其他的养分,其中以氮、磷、钾为最需要。但是土壤中氮、磷、钾很不够,为了给土壤补充氮、磷、钾,所以我们需要制造和施用氮肥、磷肥和钾肥。现在我们着重地介绍一下磷肥。磷是植物细胞中核蛋白的主要成分,它对于植物发芽、生长起着重要的作用;磷能够刺激植物早开花、结实,生长茁壮,提高农作物的收获量;并且有助于豆科 In addition to water, carbon dioxide and sunlight, plants need to absorb other nutrients from the soil, of which nitrogen, phosphorus and potassium are most needed. However, nitrogen, phosphorus, and potassium are not enough in the soil. In order to supplement the soil with nitrogen, phosphorus, and potassium, we need to make and apply nitrogen, phosphate, and potash fertilizers. Now we will focus on phosphorus fertilizer. Phosphorus is the main component of nuclear proteins in plant cells. It plays an important role in plant germination and growth. Phosphorus can stimulate early flowering, seed setting, robust growth, and increase the yield of crops; it is also helpful for legumes.