江西农业学报Issue(6)：102-105,4.
江西省双季稻氮肥用量研究
Study on Optimal Application Rate of Nitrogen Fertilizer for Double Cropping Rice in Jiangxi Province
摘要
Abstract
The experimental studies on the optimal application rate of nitrogen fertilizer for double cropping rice were conducted in 11 counties of Jiangxi province during 2011~2012.The results showed that:along with the increase in nitrogen fertilizer applica-tion rate, the rice yield increment per unit nitrogen revealed a declining trend, and both the nitrogen utilization rate and the agro-nomic utilization efficiency of nitrogen fertilizer decreased unceasingly.The curve fitting equation was built to calculate the applica-tion rate of nitrogen fertilizer for obtaining the highest rice yield or the most economic rice yield.According to the calculative results combined with the agronomic utilization efficiency of nitrogen fertilizer, it was concluded that the average most economic application rate of nitrogen fertilizer for early rice and late rice in Jiangxi province was 12.6 and 15.0 kg/667 m2 respectively.关键词
江西/双季稻/产量/氮肥/施用量Key words
Jiangxi province/Double cropping rice/Yield/Nitrogen fertilizer/Application rate分类
农业科技引用本文复制引用
刘增兵,束爱萍,刘光荣,李祖章,袁福生,胡启锋..江西省双季稻氮肥用量研究[J].江西农业学报,2015,(6):102-105,4.基金项目
国家科技支撑计划“江西双季稻大面积均衡增产技术集成研究与示范”（2012BAD04B11）；江西省星火计划项目“省农科院广福农作物丰产科技园建设”（20135BBF61113）；国家科技支撑计划“复合（混）肥农艺配方与生态工艺技术研究”（2011BAD11B05－12）。 （）
