Performance Assessment of Combining AquaCrop Model with Recalculating Air Temperature of Straw-mulching Maize for Estimating Evapo-transpiration and Yield

文献类型： 外文期刊

第一作者： Yang, Ning

作者： Yang, Ning;Sun, Zhanxiang;Feng, Liangshan;Bai, Wei;Xiang, Wuyan;Yang, Ning;Zhang, Lizhen;Zheng, Muzi

作者机构：

关键词： Maize;Straw mulching;Crop model aquacrop;Crop evapotranspiration

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2017 年 19 卷 5 期

页码：

收录情况： SCI

摘要： A water-driven AquaCrop model, constantly simulated and recommended by FAO has been a widely accepted and is a powerful tool for assessing the productivity response to crop water utilization in rain-fed farming system. We recalculated AquaCrop model's daily air temperature of straw-mulching (SM) based upon the inter-conversion effect of the cumulative soil temperature with the cumulative air temperature and the relationship between air temperature and the soil temperature of the maize(Zea mays L.) in 2014a. The straw-mulched maize compensatory coefficient (CSM-maize) and air decrement of the cumulative soil temperature with the cumulative air temperature can be calculated as follows: CSM-maize was -0.797 from sowing to emergence, -0.637 from emergence to the tasseling stage and 0 after harvesting in the inter-conversion process. In addition, we calibrated the CSM-maize and recalculated air temperature by using measured experimental data of the growing days the evapo-transpiration (ET) and the grain yield (GY) in 2011a. After experimental data from 2012 and 2013a were used to validate the developed model for simulating the canopy cover (CC), soil water content (SWC), GY the prediction error (Pe), the coefficient of determination (R-2), the model coefficient of efficiency (CE) the relative root mean square error (RRMSE) and the Willmott index of agreement (d) were used to assess the model performance. The AquaCrop along with the original and recalculating SM air temperature were measured and simulated for the values of the growing days. The ET and GY were-5%< P-e<5%, 0.01

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