アレニウス式とアメダス気象データを利用した北陸地方における湛水直播栽培の播種早限の推定

日本作物学会紀事

原 嘉隆²  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;九州沖縄農業研究センター

关键词: AMeDAS weather data;    アメダス気象データ;    Arrhenius equation;    アレニウス式;    Daily temperature range;    気温日較差;    Direct seeding in flooded paddy field;    湛水直播;    Hokuriku region;    北陸地方;    Rice;    イネ;    Seedling emergence;    出芽;    Wind;    風;   

DOI  :  10.1626/jcs.82.402

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In cold climates, when seeds are sown directly in flooded paddy fields during the low temperature, the final rates of seedling emergence and establishment are decreased compared with warmer climates. Seeding at low temperatures also decreases the yield because of reduced plant growth. The early sowing limits for emergence and establishment of seeds in cold climates have been estimated using daily mean temperature. However, it is also necessary to estimate the early sowing limits under site-specific weather conditions. In this study, we calculated the early sowing limits for direct seeding of paddy rice at different points in the Hokuriku region using Automated Meteorological Data Acquisition System (AMeDAS) weather data and the Arrhenius equation. The goal was to help establish the direct seeding technique in Hokuriku by clarifying the conditions under which stable seedling emergence can be ensured. The results indicated that the early sowing limits of seeding calculated by the daily mean temperature differed from that calculated by the daily temperature range. Moreover, the early sowing limits tended to be earlier in inland areas, except at high altitudes, than in coastal areas.

【 授权许可】

Unknown