摘要
综述了我国水稻氮肥使用现状和存在的主要问题,从高产水稻推广应用、土壤氮背景值、施氮时期和比例以及中期晒田等方面分析了影响我国水稻氮肥利用率的可能因素,提出了通过选育氮肥利用率高的水稻品种,施用新型氮肥并改善施肥技术,氮肥与其他肥料平衡施用,使用脲酶抑制剂和硝化抑制剂,采用适时适地氮肥管理模式和水肥调控技术等方法提高水稻氮肥利用率。
This paper reviews the present situation and main problems of rice nitrogen fertilizer use efficiency in Chi -na.Analysed the possible reason of low rice nitrogen utilization in China from four aspects which were application of high yielding rice and high soil nitrogen background content ,unreasonable fertilization time and proportion ,mid-time fielddry-ing.And puts forward several method such as selecting rice varieties with high nitrogen utilization rate ,the application of the new type of nitrogen fertilizer and improved fertilization technology , balanced fertilization , the use of urease inhibitor and nitrification inhibitor , adopted properly nitrogen fertilizer management and water -fertilizer control technique to im-prove the utilization rate of nitrogen fertilizer on rice.
出处
《作物研究》
2014年第5期564-569,共6页
Crop Research
基金
国家科技支撑计划(2011BAD16B01
2012BAD04B10
2013BAD07B11)
关键词
水稻
氮肥
高效利用
Rice
Nitrogen
Efficient utilization
