N, P and K Input by Irrigation Water into Paddy Fields of Fukuoka Prefecture

Japanese Journal of Crop Science

Kazue MIZUTA¹ 

关键词: Inorganic nitrogen;    カリウム;    Irrigation water;    潅漑水;    Potassium;    全窒素;    Total nitrogen;    全リン;    Total phosphorus;    無機態窒素;   

DOI  :  10.1626/jcs.70.595

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

N, P and K input into paddy fields from irrigation water in Fukuoka Prefecture were estimated from the data of N, P and K content in irrigation water X reported amount of irrigation water. Total N input was 21-30 kg/ha. The variation among regions was large and total N input in Chikugo was larger than in other regions. Total N input after booting was 10 kg/ha. Inorganic N input throughout the cultivation period was 11-15 kg/ha and that after booting was 5 kg/ha. Input of total P throughout the cultivation period was 1.5-2.2 kg/ha and that of P04-P was 0.8-1.2 kg/ha. K input was 29-42 kg/ha.

【 授权许可】

Unknown