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当前,一些农民在化肥施用中,由于对其特性不了解,不合理现象相当严重,从而降低了化肥的利用率,甚至对作物造成不同程度的肥害,其具体表现: 一是有些群众在用磷酸二铵作追肥时。往往随着浇水撒施,认为这样省工省力,既浇了水,又施了肥,一举两得,实际上这样撒入水中,不但氮肥量挥发损失,而且其中的磷素只停留在地表面,根本不能随水流至根系密集处,肥效表现较差。磷酸二铵应当提倡作基肥使用,如作追肥,则应
At present, some peasants in the application of chemical fertilizers, due to their characteristics do not understand, unreasonable phenomenon is quite serious, thus reducing the utilization of chemical fertilizers, and even to varying degrees of fattening crops, its specific performance: First, some people are using Diammonium phosphate for top dressing. Often with the water sprinkling, that such a labor-saving effort, both poured water, and fertilizers, kill two birds with one in fact, so dumped into the water, not only volatile loss of nitrogen fertilizer, but only the remaining phosphorus on the ground surface, Can not flow to the roots with dense Department, poor performance fertilizer. Diammonium phosphate should be promoted for use as a base fertilizer, such as for fertilizer, should be