ダイズ品種の発育モデルの作成と気温上昇が発育速度に及ぼす影響の広域推定

日本作物学会紀事

鮫島 良次⁴  大野 宏之¹  本間 香貴²  白岩 立彦²  中野 聡史¹  島田 信二¹  熊谷 悦史³ 

[1] 農研機構中央農業総合研究センター;京都大学大学院農学研究科;農研機構東北農業研究センター;北海道大学大学院農学研究院

关键词: Agro-meteorological grid square data;    メッシュ農業気象データ;    Developmental rate;    発育速度;    Global warming;    地球温暖化;    Soybean;    ダイズ;   

DOI  :  10.1626/jcs.84.408

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

This study aimed to estimate the large-scale effects of elevated air temperature on the phenological development of soybean by using the agro-meteorological grid data. A logistic model has been developed for describing the developmental rate (DVR) of three soybean cultivars, Ryuhou, Enrei and Fukuyutaka. Root mean square errors of the model estimation ranged from 1.4 to 2.2 days for emergence (VE) to flowering (R2) and 1.2 to 2.8 days for R2 to beginning of seed growth (R5). The model could estimate the effect of elevated air temperature on phenological development in a temperature gradient chamber. The response of DVR to air temperature change from VE to R2 was larger in the medium cultivar, Ryuhou, Enrei, than in the late cultivar, Fukuyutaka. The elevated air temperature simulation (+3°C) resulted in shortened duration of VE to R2 in the cool, early sowing region of eastern Japan by 5 to 7 days, whereas little effect was observed in the warm, late sowing region of Kyushu, in southern Japan. This large influence of elevated air temperature on the phenological development of soybean in eastern Japan was not only because of the use of cultivars sensitive to air temperature change but also because of the range of regional air temperatures, which largely alters the DVR during the cultivation period.

【 授权许可】

Unknown