秋田県における疎植栽培条件下での追肥の有無があきたこまちの収量，品質に及ぼす影響

日本作物学会紀事

松波 麻耶²  松波 寿典³  金 和裕¹  能登屋 美咲⁴ 

[1] 秋田県農業試験場;日本学術振興会特別研究員;農研機構東北農業研究センター;秋田県農業研修センター

关键词: あきたこまち;    収量;    水稲;    疎植栽培;    追肥;    品質;    Akitakomachi;    Yield;    Rice;    Sparse-planting;    Top-dressing;    Grain quality;   

DOI  :  10.1626/jcs.85.1

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The eating quality of sparsely planted rice to that of rice planted at the standard density (21.1 hills m-2) is inferior because of the high protein content of brown rice. We investigated the effects of no topdressing on the yield and grain quality of sparsely planted rice. Akitakomachi was grown at densities of 15.1 and 11.2 hills m-2 with or without topdressing at the meiosis stage. In the field with no topdressing, 1000-grain weight was decreased, resulting in 2–7% lower yield than in that with topdressing, but the appearance quality of brown rice was not influenced by no topdressing under both sparse-planting methods. The protein content of brown rice was lowered by no topdressing. No topdressing had positive effects on the taste and stickiness of cooked rice grown in the 11.2 hills m-2 plot. In conclusion, no topdressing or reduced application rate of topdressing at the meiosis stage improved the eating quality of sparsely planted rice by reducing the protein content of brown rice.

【 授权许可】

Unknown