摘要
土壤中的有效氮量是确定推荐施氮量的重要依据。在作物生长过程中可矿化的有机态氮的数量对土壤供氮能力影响很大。本文根据西欧近年来的研究进展,重点评述了土壤中有机态氮对作物的有效性及其在推荐施肥中的作用。
Soil available N is a important partameter for fertilizing recommendation.As the total amount of N in soils is mainly affected by soil organic N,the mineralization of organic N,with a conse- quent of release of inorganic N,is of major importance in fertilizing recommendation.This paper reviewed the recent development in the research of soil organic N in west Europa and discussed the importance of mineralization of organic N in teh replenishment of N available to plants.
基金
国家自然科学基金
关键词
有机氮
推荐施肥
土壤氮素
作物
organic N
fertilization recommendation
mineralization
