植物营养与肥料学报2012，Vol.18Issue(2)：283-290,8.
灌溉模式和供氮水平对水稻氮素利用效率的影响
Effects of water management patterns and nitrogen fertilizer levels on nitrogen use efficiency of rice
摘要
Abstract
A two-year pot-culture experiment of rice cultivar, II You 838, with alluvial soil from Hubei was conducted to investigate the effects of two water management patterns and four nitrogen （N） fertilizer levels （ N 0, 126.0,157.5,210. 0 kg/ha）on the aerial part biomass, N accumulation, N use efficiency. The results show that the aerial part biomass, N accumulation and N use efficiency of rice are obviously affected by the water management patterns, and the rice grain yield, N accumulation, N agronomic efficiency, N recovery efficiency, partial factor productivity and nitrogen physiological efficiency under the water-logging irrigation pattern are higher than those of the water-controlled irrigation pattern. The biomass and N accumulation of rice aerial parts are increased with the increase of nitrogen level, while the nitrogen agronomic efficiency, partial factor productivity of the applied N and N physiological efficiency are reduced. However, there are no significant differences between the 25 % N saving from conventional nitrogen application rate （ N 157.5 kg/ha） and the conventional nitrogen application rate （ N 210.0 kg/ha）. In general, the water-logging irrigation pattern combined with the 25% N saving from conventional nitrogen application rate is recommended as a better water and nitrogen application patterns due to its higher grain yield and nitrogen utilization.关键词
灌溉模式/供氮水平/铵态氮/硝态氮/氮肥农学利用率/氮肥吸收利用率Key words
water management pattern/nitrogen fertilizer level/ammonium nitrogen/nitrate nitrogen/nitrogen agronomic efficiency/nitrogen recovery efficiency分类
农业科技引用本文复制引用
陈星,李亚娟,刘丽,方素萍,方萍,林成永..灌溉模式和供氮水平对水稻氮素利用效率的影响[J].植物营养与肥料学报,2012,18(2):283-290,8.基金项目
国家重点基础研究发展计划（2007CBl09305）项目资助. （）
