中国産多収性水稲品種の窒素吸収と施肥窒素吸収率に及ぼす 緩効性肥料の施用効果

日本作物学会紀事

吉田 徹志²  井上 洋子²  居 静³  岩永 泰大²  黒田 翔平²  山本 由徳²  王 余龍³  宮崎 彰²  小久保 敏明¹  岡崎 秀昭² 

[1] 愛媛大学大学院連合農学研究科;高知大学農学部;揚州大学

关键词: Chinese high-yielding cultivar;    中国産多収性品種;    Fertilizer recovery rate;    施肥吸収率;    Nitrogen fertilizer application;    窒素施肥;    Rice;    水稲;    Slow release fertilizer;    緩効性肥料;   

DOI  :  10.1626/jcs.81.424

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The amount of nitrogen (N) absorbed from fertilizer before the young panicle formation stage in Chinese high-yielding cultivars, Yangdao 4 (YD) and Wuyugen 3 (WY) was increased significantly by applying a slow-release fertilizer. This resulted in a significant increase in fertilizer N recovery rate, and significantly increased the N content at the maturity stage in YD. The amount of N absorption from the young panicle formation stage to heading stage was significantly higher in YD than in WY, while WY absorbed a significantly larger amount of N than YD before the young panicle formation stage. This suggests that in YD, nitrogen is absorbed for a longer period from the slow-release fertilizer than in WY. The fertilizer N recovery rate in YD was higher in the sigmoid-type fertilizer than in the linear-type fertilizer, followed by the split application of ammonium chloride (C). It significantly increased with increasing amount of N fertilizer applied in C treatment, but not with linear or sigmoid-type fertilizers. These results show that the application of sigmoid-type slow-release fertilizer improves the fertilizer N recovery rate in these cultivars and the amount of N fertilizer to be applied can be decreased, thereby reducing the burden to the environment.

【 授权许可】

Unknown