调节土壤中氮素营养状况在小麦高产栽培中占有重要地位。实践经验表明,在其他栽培条件适宜的情况下,适量施用氮素化肥,是实现小麦高产的关键。但是,如何根据土壤氮素含量和供氮状况进行氮素化肥的适量施用并不明确,因而一些高产社队常因麦田氮肥用量过多,造成贪青倒伏,减了产,还增加了生产成本;或因氮肥用量不足,导致后期脱肥早衰,影响产量提高。为了探求高产麦田土壤供氮性能及氮素化肥合理施用, Regulation of nitrogen in soil nutrition status in high-yielding wheat plays an important role. Practical experience shows that under other appropriate cultivation conditions, the proper amount of nitrogen fertilizer is the key to achieve high yield of wheat. However, it is not clear how to apply appropriate amount of nitrogenous fertilizer according to soil nitrogen content and nitrogen supply status. Therefore, some high-yielding communes often use too much nitrogenous fertilizer in the wheat field, causing the lodging of greedy greens, reducing production and increasing production costs ; Or due to insufficient amount of nitrogen fertilizer, leading to post-fattening premature decline, affecting the yield increase. In order to explore the high-yield wheat field nitrogen supply and rational use of nitrogen fertilizer,