施氮是一个增加禾草产量的有力措施,但从经济和能量守恒的观点来看,要讲求有效性。更清楚地了解所施的氮如何影响草地生长的成分,包括了解不同程度的施氮量所产生的不同作用,将会获得更大的收益。看来现在有必要对其中某些有作用的资料综述 Nitrogen fertilization is a potent measure to increase the production of grasses, but from the point of view of economy and energy conservation, the effectiveness should be emphasized. A clearer understanding of how the applied nitrogen affects the components of grassland growth, including understanding the different effects of varying levels of nitrogen application, will yield greater benefits. It now appears that there is a need for an overview of some of these materials that have a role to play