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冲施肥又叫水冲肥,它是一种追肥的方式。实际就是把固体的速效化肥溶于水中,并以水带肥的方式施肥。冲施肥通常用于水溶性化肥,主要是氮肥和钾肥,二者的水溶性强,通过肥水结合,让可溶性的氮钾养分渗入土壤中,再为作物根系吸收。冲施肥即灌溉施肥,而灌水方式可分井灌和畦灌,也包括滴灌、喷灌,有的地方管理粗放甚至用大水漫灌来冲施化肥。这种大水漫灌的施肥方式突出了一个“冲”字,很容易造成氮素的大量损失。
Chong fertilization, also known as fertilizer water, it is a way to top-dressing. In fact, the solid quick-dissolving fertilizer dissolved in water, and the way to fertilize with water. Chong fertilization is usually used for water-soluble fertilizers, mainly nitrogen and potassium, the two water-soluble, through the combination of fertilizer and water, so that soluble nitrogen and potassium nutrients into the soil, then the root absorption of crops. Fertilization is irrigating and fertilizing fertilizers, and irrigation methods can be divided into well irrigation and irrigation, including drip irrigation, sprinkler irrigation, extensive management in some places or even flood irrigation with chemical fertilizers. This large flood irrigation fertilization highlights a “red ” word, it is easy to cause a lot of nitrogen loss.