Effects of nitrogen fertilization on the seed quality of soybean(Glycne max. L) and its improvement by using slow-release nitrogen fertilizer.

施氮肥对大豆种子品质的影响及缓释氮肥改良。

• 批准号: 18580061
• 负责人: SUGIMOTO Toshio
• 金额: $ 2.36万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18580061/
• 关键词: Nitrogen application; soybean; slow-release nitrogen fertilizer; seed protein; seed oil; 種子タンパク質; 窒素施肥; 品種間差

Effects of the nitrogen fertilizer applications on the yield and quality of soybean seeds were examined.1) Grafting experiments showed that roots from plants of a cultivar having low-protein seeds affected seed protein concentrations responding to concentrations of nitrogen in growth medium.2) Soybean cultivars were roughly classified into two types based on the response of plants against nitrogen fertilizers (changes of the seed yields by nitrogen application). One was that seed yields were increased by nitrogen fertilization and the other was that seed yields were not affected by nitrogen application.3) Tanbaguro, a cultivar having biggest seeds with black coat, increased its seed size and oil concentration in seeds by the increase of amounts of nitrogen application during seed maturation periods. These results showed that inorganic nitrogen (fertilized nitrogen) absorbed during reproductive stage was converted to organic form (amino acids) and played a some role to increase yields. The observation that oil concentrations in seeds were increased by nitrogen fertilization suggested that suppression of nitrogen fixation would promote oil accumulation in seeds.

研究了不同施氮量对大豆种子产量和品质的影响。1)嫁接试验表明，低蛋白大豆品种的根影响种子蛋白质浓度对氮素浓度的响应。2)大豆品种根据植株对氮肥的反应(施氮量对种子产量的变化)大致分为两类。3)黑皮种子最大的品种坦巴古罗，在种子成熟期，随着施氮量的增加，籽粒大小和含油量增加。这些结果表明，生殖阶段吸收的无机氮(肥料氮)转化为有机形式(氨基酸)，对产量有一定的促进作用。氮肥提高种子含油量的观察结果表明，抑制固氮可以促进种子含油量的增加。