Declining trends of water requirements of dry season Boro rice in the north-west Bangladesh

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• 作者：Tapos Kumar Acharjee^a ; ^c ; ^{tapos.acharjee@wur.nl} ; ^{tapos.bau@gmail.com} ; Gerardo van Halsema^b ; Fulco Ludwig^a ; Petra Hellegers^b
• 关键词：Water demand ; Evapotranspiration ; Climate change
• 刊名：Agricultural Water Management
• 出版年：2017
• 出版时间：31 January 2017
• 年：2017
• 卷：180
• 期：part_PA
• 页码：148-159
• 全文大小：1776 K
• 卷排序：180

文摘

Instead of increasing temperature, ETo decreased because of increasing relative humidity and decreasing sun-shine hours and wind-speed. Declining ETO and shorter growing season due to higher temperature decreased potential crop water requirement (∑ETC) of Boro rice. High variations in potential irrigation requirement for crop evapotranspiration (∑ETC − ER) of Boro rice among different districts are linked to variations in effective rainfall. Declining trends of net irrigation requirements of Boro rice. A warming climate does not always result in higher agricultural water use.