施氮量对Ⅱ优615主要经济性状和产量的影响

Effect of Nitrogen Amount on Major Economic Traits and Yield of Ⅱ You 615

[目的]研究施氮量对杂交稻Ⅱ优615经济性状和产量的影响。[方法]在不同施氮量水平下,对Ⅱ优615的经济性状和产量进行分析。[结果]结果表明,氮肥施用偏多或偏少,都会影响Ⅱ优615的经济性状,导致稻谷产量水平不能正常发挥。在肥力水平中等的田块种植Ⅱ优615,施用尿素180 kg/hm2左右为宜,在施用时间上按施用尿素总量的70%为底肥,栽后15 d追施余下的30%尿素能获得高产。[结论]该研究结果为杂交稻Ⅱ优615的生产应用和推广提供理论依据。

[Objective]The ptupose of this research was to study the effect of nitrogen fertilizer rates on major economic traits and yield of new hybrid rice combination Ⅱ You 615. [Method] The major economic traits and yield of new hybrid rice combination Ⅱ You 615 were analyzed under the different nitrogen fertilizer rates. [Result]The results showed that high or low nitrogen fertilizer would affect economic traits of Ⅱ You 615,resulting in rice yield was not the nonnal level.The high yield of new hybrid rice combination Ⅱ You 615 was gained when planted in field having middle fertility level and used urea 180 kg/hm^2 ,70% for basal fertilizer and 30% for top dressing after planting 15 d. [Conclusion] This study will provide the theoretical references for popularizing new hybrid rice combination Ⅱ You 615.