Possibility of yield enlargement with raise of nodulation function in soybean
大豆结瘤功能提高而增产的可能性
基本信息
- 批准号:10660015
- 负责人:
- 金额:$ 2.24万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 1999
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1.Nodule dry mass and nodule activity (measured as relative ureide method) decreased by heavy fertilization (more than N17g/mィイD12ィエD1) in both varieties, En6500(super nodulation strain) and Enrei(control). Nodule dry mass of En6500 was four times as mach as weight of Enrei.2.Nodule weight and specific nodule activity (Nmg/g/day) were reached the maximum value at early- maturing stage(R5). Specific nodule activity of En6500 was low level, almost 1/4 of Enrei.3.In the heavy fertilization condition, the contribution rates of En6500 and Enrei were 58% and 43%, respectively, although, in the non-fertilization condition, the contribution rates of two varieties were 67% and 58%, respectively. Nodule activity was influenced by soil nitrogen and soil moisture, but was not affected very much by temperature.4.It is not concluded clearly that the characteristic of super-nodulation was not advantageous characteristic for yield enlargement.
1.超级结瘤品系En6500和对照品种Enrei的根瘤干质量和根瘤活性(以相对脲含量法测定)在过量施肥(超过N17g/m φ D12 φ D1)后均有所下降。En6500的结节干质量是enre2的4倍。瘤重和比瘤活性(Nmg/g/d)在早熟期(R5)达到最大值。En6500的特异结节活性较低,约为enre2的1/4。在重度施肥条件下,En6500和Enrei的贡献率分别为58%和43%,而在不施肥条件下,两个品种的贡献率分别为67%和58%。根瘤活性受土壤氮和土壤水分的影响,但受温度的影响不大。超结瘤特性不是提高产量的有利特性,这一点还没有明确的结论。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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NAKANO Junichi其他文献
NAKANO Junichi的其他文献
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