北陸地域で疎植栽培した水稲品種「北陸193号」の生育および収量特性

日本作物学会紀事

古畑 昌巳¹ 

[1] 中央農業総合研究センター北陸研究センター

关键词: Growth;    生育;    High yielding variety;    多収性品種;    Hokuriku 193;    北陸193号;    Planting density;    個体密度;    Population density;    栽植密度;    Sparse planting;    疎植;    Yield;    収量;   

DOI  :  10.1626/jcs.82.69

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

This study was conducted to establish a method of sparse planting culture of rice cultivar ‘Hokuriku 193 ’in the Hokuriku district of Japan. For 3 years (2009–2011), ‘Hokuriku 193’ was cultivated by sparse planting i.e., decreasing the number of seedlings per hill or increasing hill distance, under early (late April to early May) and standard (mid- to late May) planting conditions, and their growth, yield, and yield components were examined. The numbers of stems and the leaf area index were lower in the sparse planting plot than in the standard plot. Growth was poorer in the early plot than in the standard plot. However, under sparse planting conditions the grain-to-straw ratio was higher in the early plot and the yield was the same as that in the standard plot. The yield in sparse planting culture decreased at a lower population density. The yield loss due to planting fewer seedlings per hill was less than that due to planting with increased hill distance at the same population density.

【 授权许可】

Unknown