出穂期予測式およびメッシュ気温データを活用した東北地域での飼料用稲品種の湛水直播栽培における出穂期予測マップ

日本作物学会紀事

山口 弘道²  木村 勝一³  河本 英憲⁴  福田 あかり²  白土 宏之⁴  神田 英司⁵  福嶌 陽⁴  関矢 博幸⁴  押部 明徳¹ 

[1] 国際農林水産業研究センター）;農研機構中央農業総合研究センター;元農研機構東北農業研究センター;農研機構東北農業研究センター;鹿児島大学農学部

关键词: 出穂;    飼料用稲;    水稲;    直播栽培;    DVR;    メッシュ気温データ;    Heading date;    Forage Rice;    Rice;    Direct seeding;    Mesh Temperature Data;   

DOI  :  10.1626/jcs.85.193

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Maps for forecasting heading dates of the forage rice cultivars ‘Bekogonomi’ and ‘Yumeaoba’, direct-seeded in paddies in the Tohoku region were created by using models to estimate the developmental stages of rice plants, and 1-km-mesh temperature data. The developmental-stage models were prepared by using growth and temperature data obtained from the experiments held in several different cropping seasons in Morioka, in the north central region of Tohoku. Heading dates with respect to direct seeding dates were predicted by using these models. The root mean square error (RMSE), quantified by the difference between the predicted heading dates and the observed ones, was 1.8 to 2.8 days. Inclusion of data from two other locations where the climatic conditions differed from those at Morioka increased this error to only 1.9 to 3.1 days. The heading dates of every 1-km mesh, as predicted from the daily mean temperatures in a normal year, were successfully displayed on the maps of the Tohoku region. Information about heading dates on these maps can help farmers to select cultivars and coordinate crop schedules to suit their local climatic conditions and farming practices. Furthermore, by using the daily mean temperature of the normal year, heading dates on the maps can be corrected appropriately to that in the year and work schedule may also be corrected.

【 授权许可】

Unknown