RZWQM2模型对中国北方农牧交错带青饲玉米模拟适用性评价  

Evaluation of Suitability of RZWQM2 Model for Silage Maize Simulation in Agro-Pastoral Ecotone of Northern China

作　　者：肖雨霄 张红娟 岑剑涛 肖捷颖[1] 裴宏伟[2,3] XIAO Yu-xiao;ZHANG Hong-juan;CEN Jian-tao;XIAO Jie-ying;PEI Hong-wei(College of Environmental Sciences and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Department of Municipal and Environmental Engineering,Hebei University of Architecture,Zhangjiakou 075000,Hebei Province,China;Hebei Key Laboratory of Water Quality Engineering and Comprehensive Utilization of Water Resources,Zhangjiakou 075000,Hebei Province,China;Zhangjiakou Institute of High Efficiency in Agricultural Water-saving,Zhangjiakou 075000,Hebei Province,China)

机构地区：[1]河北科技大学环境科学与工程学院,石家庄050018 [2]河北建筑工程学院市政与环境工程系,河北张家口075000 [3]河北省水质工程与水资源综合利用重点实验室,河北张家口075000 [4]张家口市农业高效节水研究所,河北张家口075000

出　　处：《节水灌溉》2023年第7期20-27,共8页Water Saving Irrigation

基　　金：国家自然科学基金项目(41701017);河北省科技厅重点研发计划(22377001D);河北省高等学校科学技术研究项目资助(ZD2022015);河北省重点研发项目(21374001D);河北省科技厅外专引智项目。

摘　　要：为评估RZWQM2模型对中国北方农牧交错带青饲玉米模拟的适用性,率定出一套适宜于本地区青饲玉米的模型参数,选取位于中国北方农牧交错带中段张北县境内的实验样地进行了为期两年的田间试验(2020、2021年)。基于大型蒸渗仪实测蒸散数据、气象数据、土壤物理参数、作物遗传参数和田间管理措施等数据,对青饲玉米不同土层土壤含水量、作物生长状况以及生育期内田间蒸散量进行模拟。结果表明:①RZWQM2模型较好地模拟土壤水分的动态趋势,不同土层(20 cm、40 cm、60 cm和80 cm)土壤含水量均方根误差RMSE在0.019~0.029 cm^(3)/cm^(3)之间,一致性指数d在0.609~0.789之间,决定系数R2在0.717~0.940之间;②模型对青饲玉米生长情况模拟结果较好,2020、2021年青饲玉米株高模拟的一致性指数d分别高达0.919和0.952,青饲玉米叶面积指数和生物量的d值在介于0.731~0.816之间;③青饲玉米生育期内田间蒸散量模拟值与实测值均呈现先升高后降低的变化规律,在吐丝期蒸散量达到最大,最大值分别为6.550 mm和8.246 mm,2020、2021年整个生育期内青饲玉米蒸散量分别为345.145 mm和353.856 mm,模型模拟后决定系数R2均在0.790以上。RZWQM2模型对中国北方农牧交错带张北地区青饲玉米生长发育适用性较好,可以进一步推广该研究方法。In order to evaluate the applicability of RZWQM2 model to the simulation of silage maize in the agro-pastoral ecotone of Northern China,and to determine a set of model parameters suitable for silage maize in this region.In this study,a two-year field trial was conducted in 2020 and 2021 in Zhangbei County,in the middle of the agro-pastoral ecotone in Northern China.Based on the evapotranspiration data measured by a large lysimeter,meteorological data,soil physical parameters,crop genetic parameters and field management measures,the soil moisture content,crop growth and field evapotranspiration of silage maize in different soil layers during the growth period were simulated.The results showed that:①RZWQM2 model could simulate the dynamic trend of soil moisture well.The RMSE of soil moisture content in different soil layers(20 cm,40 cm,60 cm and 80 cm)ranged from 0.019 to 0.029 cm^(3)/cm^(3),and the d ranged from 0.609 to 0.789.The R^(2) ranged from 0.717 to 0.940.②The model simulated the growth of silage maize with good results.The d of plant height of silage maize in 2020 and 2021 was up to 0.919 and 0.952,and the d of leaf area index and biomass were between 0.731 and 0.816.③The simulated and measured values of evapotranspiration in the growth period of silage maize increased first and then decreased,and the evapotranspiration reached the maximum at the silking stage,which were 6.550 mm and 8.246 mm,respectively.The evapotranspiration of silage maize in the whole growth period of 2020 and 2021 was 345.145 mm and 353.856 mm,respectively,and the R^(2) after model simulation were all above 0.790.The RZWQM2 model was suitable for silage maize growth and development in Zhangbei area of agro-pastoral ecotone of Northern China,so this method could be further extended.

关 键 词：青饲玉米 RZWQM2模型 土壤含水量 作物生长 田间蒸散量 

分 类 号：S275.9[农业科学—农业水土工程]