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Title: 高度な農地水管理のための水田水温シミュレーション
Other Titles: Simulation of paddy water temperature for advanced water management on agricultural lands
Authors: 丸山, 篤志1 Browse this author →KAKEN DB
石田, 祐宣2 Browse this author →KAKEN DB
桑形, 恒男3 Browse this author →KAKEN DB
渡辺, 力4 Browse this author →KAKEN DB
Authors(alt): Maruyama, Atsushi1
Ishida, Sachinobu2
Kuwagata, Tsuneo3
Watanabe, Tsutomu4
Keywords: 作物生育
Crop growth
Natural convection
Roughness length
Heat exchange
Deep-flooding management
Issue Date: 20-Mar-2019
Publisher: 低温科学第77巻編集委員会
Journal Title: 低温科学
Volume: 77
Start Page: 137
End Page: 144
Abstract: 陸面大気相互作用によって形成される農耕地の熱環境は,作物の生育や収量を左右するなど農業上の重要な役割を果たしている.群落微気象モデルの農業における利用例として,イネの生育に影響を及ぼす水田水温のシミュレーションについて解説した.水田水温を推定する既存モデルをレビューするとともに,田面と群落の熱収支に基づいたモデルを紹介し,田面における熱交換係数の特性を論じた.これをもとに,水田の水深や灌漑時刻など水管理方法によって水田水温がどのように変化するのかシミュレーションを行った.その結果から,水管理方法が水田群落の熱環境に強く影響を及ぼしている可能性を示した.
The thermal environment of the agricultural land formed by the interaction between the land surface and the atmosphere plays an important role in agriculture to affect growth and yield of crops. As an application example of micro-meteorological model in agriculture, a water temperature simulation of rice paddies was described. In addition to reviewing existing models estimating paddy water temperature, a model based on the energy budgets of the ground and the plant canopy was explained in detail, and the characteristics of the heat exchange coefficient on the paddy ground surface was also discussed. Based on these knowledge, it was simulated how the paddy water temperature is changed by water management such as water depth and irrigation time in paddy fields. It was suggested from the result that the water management strongly affects the thermal environment in paddy fields.
Type: bulletin (article)
Appears in Collections:低温科学 = Low Temperature Science > 第77巻

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