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以日本和IRR I的7个水稻品种为材料,分别以武香粳9号和两优培九为对照,在江苏南京和云南丽江研究了不同水稻基因型氮素利用效率及其在不同生态环境下的变异规律。结果表明:丽江试点水稻成熟期氮素干物质生产效率和氮素收获指数显著高于南京点,但氮素稻谷生产率显著降低;丽江试点水稻抽穗前、抽穗至成熟及成熟期氮积累量显著高于南京试点,且氮素表观转运量明显提高,而氮素转运率在两生态点间无显著差异。
In this study, seven rice cultivars from Japan and IRR I were used as control materials, and Wuxiangjing 9 and Liangyoupeijiu were used as control. The nitrogen use efficiency of different rice genotypes and their variations in different ecological environments were studied in Nanjing, Jiangsu Province and Lijiang, Yunnan Province. law. The results showed that the dry matter production efficiency and nitrogen harvest index of Lijiang pilot rice were significantly higher than those of Nanjing during the maturity stage, but the productivity of nitrogen paddy significantly decreased. Before heading, the nitrogen accumulation of heading stage was significantly higher in Lijiang Pilot in Nanjing, and apparent nitrogen transport increased significantly, while nitrogen transport rate in the two ecological points no significant difference.