农业环境科学学报2012，Vol.31Issue(10)：2066-2071,6.
水氮耦合对水稻田间氨挥发规律的影响
Effects of Irrigation and Nitrogen Fertilization on Ammonia Volatilization in Paddy Field
摘要
Abstract
Controlling the ammonia(NH3) volatilization from nitrogen(N) fertilization could be a good strategy to reduce N loss in crop growing season. The interaction of irrigation and N fertilization NH3 volatilization were conducted in an experiment of pool culture within rainproof shelter in paddy field. Data were collected during the growing season of 2009 and 2010 from treatments under controlled and conventional irrigalion receiving N application of 90 kg·hm-2, 180 kg·hm-2, and 270 kg·hm-2. The NH3 volatilization was determined by the venting method. Results showed that the total amounts of NH3 volatilization in the whole growth period ranged from 31.67 kg · hm-2 to 69.70 kg · hm-2 a-mong the treatments, accounting for 17.95%～28.64% of N applied. The peak of ammonia volatilization appeared in 1 ～3 days after each N application, regardless of treatments. The NH3 volatilization during the whole growing season was in order: returning green stage>jointing-booting stage>tillering stage>heading-flowering stage>milky stage. Irrigation and N fertilization significantly influenced on NH3 volatilization. Total amounts and loss rate of NH, were lower in controlled irrigation compared with conventional irrigation. With the increment of N application rates, NH3 volatilization significantly increased. The loss rate of NH3 volatilization(17.59%) was lowest under controlled irrigation with N application of 180 kg·hm-2. We concluded that combining controlled irrigation and reducing N fertilization can reduce NH3 volatilization in the Paddy field.关键词
控制灌溉/氮肥/稻田/氨挥发Key words
controlled irrigation/ nitrogen fertilization/ paddy field/ ammonia volatilization分类
资源环境引用本文复制引用
肖新,杨露露,邓艳萍,汪建飞..水氮耦合对水稻田间氨挥发规律的影响[J].农业环境科学学报,2012,31(10):2066-2071,6.基金项目
安徽省青年科学基金项目(10040606Q12) （10040606Q12）
