基于根区水质模型的宁夏引黄灌区春玉米土壤水氮运移及淋溶过程模拟  

Simulation of Soil Water and Nitrogen Migration and Leaching Process in the Yellow River Irrigation District of Ningxia for Spring Maize Based on RZWQM 2 Model

作　　者：姚举上 刘文娟[1] 马琨[2] 邓江茹 YAO Jushang;LIU Wenjuan;MA Kun;DENG Jiangru(School of Agriculture,Ningxia University,Yinchuan 750021,China;School of Ecology and Environment,Ningxia University,Yinchuan 750021,China)

机构地区：[1]宁夏大学农学院,宁夏银川750021 [2]宁夏大学生态环境学院,宁夏银川750021

出　　处：《农业科学研究》2025年第1期1-10,共10页Journal of Agricultural Sciences

基　　金：宁夏回族自治区农业资源环境监测与保护项目(农业面源污染)(2130135);国家自然科学基金项目(41501234)。

摘　　要：为研究宁夏引黄灌区不同施肥模式对土壤氮素运移的影响,应用根区水质模型(root zone water quality model-version 2, RZWQM 2)对宁夏引黄灌区春玉米农田水氮运移情况进行参数率定和数据验证。模拟结果表明:模型对土壤含水量模拟的均方根误差和平均相对误差变化范围分别为0.010 5~0.0291 g·g^(-1)、5.58%~13.42%,模型对土壤硝态氮质量比模拟的均方根误差和平均相对误差变化范围分别为1.089 6~10.754 7 mg·kg^(-1)、12.14%~42.30%,说明RZWQM 2模型在模拟宁夏引黄灌区土壤水氮运移方面具有较高的准确性。进一步模拟结果显示,在灌水量为533 mm、施氮量为300 kg·hm-2的条件下,能够维持作物高产的同时降低氮素淋溶损失,有利于进一步防控农业面源污染。In order to investigate the impact of different fertilization patterns on soil nitrogen migration in the Yellow River Irrigation District of Ningxia,the root zone water quality model-version 2(RZWQM 2)was applied to parameter calibration and data validation of soil water and nitrogen migration in spring maize fields.The simulation results indicate that the root mean square error and average relative error for soil moisture content simulation ranged from 0.0105 to 0.0291 g·g^(-1) and 5.58%to 13.42%,respectively,and those for soil nitrate nitrogen mass ratio ranged from 1.0896 to 10.7547 mg·kg^(-1) and 12.14%to 42.30%,respectively.The findings suggest that the RZWQM 2 model demonstrates high accuracy in simulating soil water-nitrogen migration in the Yellow River Irrigation District of Ningxia.Further simulation results show that under irrigation of 533 mm and nitrogen application of 300 kg·hm-2,it is possible to maintain high crop yields while reducing nitrogen leaching losses,which is beneficial for further controlling agricultural non-point source pollution.

关 键 词：土壤氮素 春玉米 根区水质模型(RZWQM 2) 水氮运移 淋溶过程 宁夏引黄灌区 

分 类 号：S153[农业科学—土壤学]