为探讨超级晚稻组合丰源优299的产量与氮利用效率优势,以两系杂交稻组合C两优4488和三系杂交稻组合威优46为对照,开展了氮肥施用对比试验.结果表明,丰源优299具有明显的产量优势,同时,其氮素累积量、氮肥利用率、氮素吸收效率、氮收获指数、氮肥效率与氮素利用效率均显著高于普通杂交稻.可见,超级稻的推广应用,不但可以增加粮食产量,而且可以提高氮素利用效率,减少因氮肥损失而带来的环境污染.%To study the advantages of super late rice combination Fengyuanyou 299 in yield and nitrogen utilization efficiency, a field plot experiment was conducted with two-line hybrid rice combination C Liangyou 4488 and three-line hybrid rice combination Weiyou 46 as control. The results showed that Fengyuanyou 299 had more significant yield superiority. At the same time, nitrogen accumulation, nitrogen use efficiency, nitrogen uptake efficiency, nitrogen harvest ■ index, nitrogen fertilizer efficiency and nitrogen utilization efficiency of Fengyuanyou 299 were significantly higher than those of common hybrid rice. So application of super hybrid rice in production can not only increase yield of food but also heighten nitrogen utilization efficiency and reduce the environment pollution induced by nitrogen loss.
展开▼
