植物营养与肥料学报Issue(3)：517-524,8.DOI:10.11674/zwyf.2014.0301
秸秆还田下氮肥管理对中低产田水稻产量和氮素吸收利用影响的研究
Effect of nitrogen fertilizer managements on rice yield and nitrogen uptake in medium and low yield fields under the conditions of straw turnover
摘要
Abstract
A field experiment was carried out to study the effect of different nitrogen fertilizer ratios of basal∶dressing in tillering-panicle period of rice in Hubei Province in 2011 and 2012 on the yield and nitrogen uptake in the experiment .Rice cultivar, Liangyoupei 9, was used as material.The rice straw were completely turnover into paddy fields after harvest and the total nitrogen input was N 180 kg/ha for all the treatments in both the medium and low yield paddy fields , and the yield and yield components , leaf SPAD, nitrogen uptake and utilization were determined .The results show that the highest rice yield in both low and medium yield fields are achieved in the N application ratio of 40-30-30 for basal-tillering-panicle among the four treatments , the yield is increased by 15.9%-8.6%compared with the ratio of 80-0-20 , and 6.7%-5.5%with the ratio of 60-20-20.Meanwhile , higher nitrogen harvest index and partial fertilizer productivity of nitrogen are also obtained in the ratio of 40-30-30.The descant order of the yield in both the low and medium yield fields is 40-30-30>50-20-30>60-20-20>80-0-20.Comprehensively considering the yield and its components , SPAD value, nitrogen uptake and utilization , we conclude that the application ratio of 40-30-30 for nitrogen fertilizer used at basal , tillering and heading stage in rice is a reasonable N fertilization management in medium-and low-yield fields .关键词
中低产水稻田/氮肥管理/氮肥利用率/产量/水稻Key words
low and medium yield field/nitrogen management/nitrogen use efficiency/yield/rice分类
农业科技引用本文复制引用
陈海飞,冯洋,徐芳森,蔡红梅,周卫,刘芳,庞再明,李登荣..秸秆还田下氮肥管理对中低产田水稻产量和氮素吸收利用影响的研究[J].植物营养与肥料学报,2014,(3):517-524,8.基金项目
农业部公益性行业（农业）科研专项（201003016）；现代农业产业技术体系建设专项资金（CARS-01-31）资助。 （）
