江西农业大学学报2013，Vol.35Issue(1)：13-17,32,6.
不同复种方式对早稻产量和氮素吸收利用的影响
Effects of Different Cropping Patterns on Early Rice Yield and Nitrogen Absorption and Utilization
摘要
Abstract
Using the super rice variety ( GanXin 203) as the material, the effects of different cropping patterns, namely, the pattern of milk vetch + early rice + late rice ( ZDD) , rape + early rice + late rice, and fallow + early rice + late rice (XDD) , on early rice yield and nitrogen absorption and utilization were studied through fixed - position field experiments from 2009 to 2011. The results showed that ZDD treatment resulted in the highest yield of the nitrogen fertilization plots in the two years, which was 237. 2 kg/hm2 higher than that of XDD in 2010, and 331. 5 kg/hm2 higher than that of YDD in 2011. In the no nitrogen fertilization plots, different treatments led to significantly different yields, ranking as follows: ZDD > YDD > XDD. The total nitrogen accumulation of ZDD treatment increased by about 13.5% -21.7% and 57.9% -94.6% in the fertilization and the no fertilization plots respectively, significantly higher than those of other treatments. Significantly positive correlation existed between rice yield and total nitrogen accumulation. On the contrary, the efficiency of nitrogen dry matter production and grain productive rate of nitrogen was significantly negatively related with rice yield.关键词
早稻/复种方式/产量/氮素吸收与利用Key words
early rice/ cropping patterns/ yield/ nitrogen absorption and utilization分类
农业科技引用本文复制引用
周春火,潘晓华,吴建富,石庆华..不同复种方式对早稻产量和氮素吸收利用的影响[J].江西农业大学学报,2013,35(1):13-17,32,6.基金项目
国家"十二五"科技支撑计划项目(2011BAD16B04)和江西省教育厅项目(GJJ09172) （2011BAD16B04）
