Abstract:

The nitrate leaching occurred in the field soil is one of the main nitrogen fertilizer losses, and is the main source of the groundwater contamination, hence gets world wide concerns. This paper analyzed the man-induced factors and inartificial factors on this problem. And it also summarized the controlling methods in recent years including: nitrogen fertilizer managements, water usage managements, catch crops and rational rotations, and the cultivation of nitrate efficient crop cultivars. The aim of this review was to provide information for the integrative nitrogen fertilizer managements for both high quality & yield and environmental protection.