期刊论文

Effects of Controlled Release Nitrogen Fertilizer on Nitrogen Dynamic Characteristics in Surface Water and Yield in Early Paddy Field

中文

生态环境学报

1674-5906

2018

27

12

2252-2257

10.16258/j.cnki.1674-5906.2018.12.010

国家重点研发计划项目（2016YFD0201200）；

本校为其他机构

湖南是中国重要的水稻(Oryza sativa L.)产区,随着农业现代化的发展,施用更多化肥成为水稻增产的主要途径,这不仅造成资源浪费,更加重了农业面源污染风险。通过水稻田间小区试验,设置了不施氮肥(WN)、常规施用尿素(CF)、控释氮肥(N100)、90%氮量控释氮肥(N90)、80%氮量控释氮肥(N80)、70%氮量控释氮肥(N70)6个处理,对田面水中各形态氮素含量进行动态监测,研究施用控释氮肥对早稻田面水各形态氮素动态变化特征和水稻产量的影响,以期探寻兼顾经济效益与环境效益的控释氮肥最佳用量,实现稻作清洁生产。结果表明:早稻田面水各形态氮素浓度均随施氮量增加而增加,且以施用尿素处理浓度较高或最高,不施...

Hunan is an important rice production area in China. With the development of agricultural modernization, more fertilizer application becomes the main way to increase paddy yield, which not only causes waste of resources, but also exacerbates agricultural non-point source pollution. In order to explore the best application amount of controlled release nitrogen fertilizer from the point of both economic efficiency and environmental efficiency and provide basis for cleaner production, the effect of controlled release nitrogen fertilizer on nitroge...