暖地の湛水直播栽培における晩播水稲の生育および収量・品質特性

日本作物学会紀事

坂井 真⁶  田村 克徳⁶  梶 亮太¹  鍋島 弘明²  古畑 昌巳⁵  山下 浩⁶  岡本 正弘³  吉永 悟志³  森田 弘彦⁷  溝淵 律子⁴ 

[1] 東北農業研究センター;富山県新川農業普及指導センター;作物研究所;農業生物資源研究所;中央農業総合研究センター北陸研究センター;九州沖縄農業研究センター;秋田県立大学生物資源科学部

关键词: Dry matter production;    乾物生産;    Fukuizumi;    ふくいずみ;    Hill-seeding;    点播;    Late seeding;    晩播;    Nitrogen uptake;    窒素吸収;    Rice;    水稲;    Submerged direct seeding;    湛水直播;    Yield;    収量;   

DOI  :  10.1626/jcs.77.273

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In 2001 and 2002, characteristics of growth, yield and quality of rice in submerged direct seeding in the late season were compared with those of rice direct seeded in the regular season to establish the method of late-seeding culture in southern Japan. Compared with the plants seeded in the regular season, late-seeded plants showed reduced elongation of stem and leaf, but grew rapidly from the panicle differentiation stage to full heading, and produced an equivalent amount of dry matter during the ripening period. The high yield was suggested to have resulted from the increased number of spikelets per m2, which was caused by the increased panicle number due to vigorous tilleration and increased nitrogen uptake in the vegetative lag phase. According to the criteria we established for selecting varieties, the yield of Dontokoi, Fukuizumi, Saikai242 and Saikai244 was higher than that of the control variety Hinohikari. Among them, however, only Fukuizumi met the standard in all the indices.

【 授权许可】

Unknown