该文通过对比分析表明:特大干旱年份,磷肥肥效显著,氮肥肥效受抑。与一般年份截然相反。造成这种异常的原因,与氮、磷的生理特性及吸收机理密切相关。 Through the comparative analysis of the article, it shows that the effect of phosphate fertilizer is significant and the effect of nitrogen fertilizer is suppressed in the extremely drought year. Contrary to the general year. The reason of this anomaly is closely related to the physiological characteristics and absorption mechanism of nitrogen and phosphorus.