水土保持学报2017，Vol.31Issue(4)：285-288,331,5.DOI:10.13870/j.cnki.stbcxb.2017.04.045
江淮丘陵区不同氮肥管理模式下稻田氨挥发损失特征研究
Study on the Ammonia Volatilization Under Different Nitrogen Schemes from Paddy Field in Jianghuai Hilly Region
摘要
Abstract
Ammonia volatilization was a major path of nitrogen losses in Paddy field.In order to evaluate the effects of different nitrogen schemes on ammonia volatilization and nitrogen use efficiency from paddy field in Jianghuai hilly region,a field experiment by the closed airflow chamber method was conducted.The results showed that the ammonia volatilization loss ratio was the highest at tillering stage,followed by basal stage,finally heading stage.Compared with the conventional fertilization,the ammonia volatilization loss amount and ratio under the application of slow release urea combined with common urea were decreased by 26.23％ and 4.52％,respectively,while the nitrogen use efficiency increased by 6.07％.Ammonia volatilization loss was positive correlated with ammonium nitrogen concentration on the surface water.Therefore,the application of slow-release urea combined with common urea can not only reduce ammonia volatilization loss,but also obtain higher economic benefit,which is suitable to be recommended in Jianghuai hilly region.关键词
江淮丘陵/稻田/缓释尿素/氨挥发Key words
Jianghuai hilly region/paddy field/slow release urea/ammonia volatilization分类
农业科技引用本文复制引用
邬刚,袁嫚嫚,曹哲伟,张兆冬,王莉莉,孙义祥..江淮丘陵区不同氮肥管理模式下稻田氨挥发损失特征研究[J].水土保持学报,2017,31(4):285-288,331,5.基金项目
国家重点研发计划项目“长江中下游水稻化肥农药减施增效技术集成研究与示范”(2016YFD0200800) （2016YFD0200800）
安徽省农科院科技创新团队项目“水旱轮作最佳养分管理”(13C1008) （13C1008）
院长青年创新基金项目“江淮丘陵稻区氮肥的氨挥发及其影响因素研究”(15B1018) （15B1018）
