一、作物为啥要施肥?要使农作物长得好、产量高,不仅要有充足的水分、光照、空气、热量条件,还需要供应它所必需的各种营养元素。光照、空气、温度是自然界中取之不尽,用之不绝的。各种营养元素主要是靠土壤提供。农作物从发芽到结实,年复一年地从土壤中带走的养分 First, the crop why fertilization? To make crops grow well, high yield, not only have adequate water, light, air, heat conditions, but also the supply of all the necessary nutrients it needs. Light, air, temperature is inexhaustible in nature, with no end. A variety of nutrients are mainly provided by the soil. Crops from the germination to fruiting, take away from the soil year after year of nutrients