Soil Water Balance and Water Use Efficiency of Rain-fed Maize under a Cool Temperate Climate as Modeled by the AquaCrop
The AquaCrop model has been widely studied and examined for its feasibility and applicability in simulating the crop growth – water relationship under tropical and warm temperate.However,the model is rarely tested under cool temperate climates.As the second largest agricultural area of China,the Sanjiang Plain is characterized with relatively lower accumulative temperature and higher annual precipitation,showing typical features of a sub-humid and cool temperate climate.This study employed the AquaCrop model to compute soil water balance and water use efficiency of rain-fed maize in the Sanjiang Plain using a 5-year monitoring dataset(2011 – 2015).The results demonstrated an acceptable performance of AquaCrop in depicting soil water content,biomass accumulation and grain yield.Soil water balance including soil water content,evapotranspiration and precipitation was described throughout the growing period.The hysteresis of the daily soil water content as responses to daily precipitation was revealed.Water use efficiency for the observed rain-fed maize increased with rising accumulative temperature and decreased with rising atmospheric CO2 concentration.This study provided a perspective for the extensive application of the AquaCrop model and the precise simulation in water dynamics under sub-humid and cool temperate climates.
Weimin Wang Xue Dong Yanyun Lu Xunliang Liu Ruining Zhang Meng Li Linjing Tian Yue Ding Xiao Pu
College of Resources Environment and Tourism Capital Normal University 105,the 3rd West Ring Road,Haidian district,Beijing,China
国际会议
2018 International Symposium on Water System Operations(ISWRSO 2018)(2018年水资源系统及调度国际研讨会)
北京
英文
1-13
2018-10-12（万方平台首次上网日期，不代表论文的发表时间）