在种植农作物、蔬菜、瓜果生产中,氮素肥料施用的适量与否可直接影响着它们的产量和品质。一般如能做到适量施用氮素,使各种肥料比例协调,就能构成“高产、优质、高效”型农业;如氮素供应不足,则会造成发育不良生长明显受到抑制,尤其是对玉米、棉花、水稻等生长期长、产量高、需氮量多的作物 In the production of crops, vegetables, fruits production, the amount of nitrogen fertilizer application or not can directly affect their yield and quality. In general, if proper amount of nitrogen is applied and the proportions of various fertilizers are coordinated, agriculture of high yield, high quality and high efficiency can be formed. If the supply of nitrogen is insufficient, the growth of underdeveloped plants will be significantly inhibited, especially for corn , Cotton, rice and other long growing period, high yield, nitrogen and more crops