RZWQM2模型模拟牛场肥水施用夏玉米土壤硝态氮迁移特征  

Simulation of the soil nitrate nitrogen migration characteristics of summer maize fertilized with dairy manure and wastewater using RZWQM2

作　　者：王贵云 张克强 付莉 窦国芳 张继圣 杜会英 Wang Guiyun;Zhang Keqiang;Fu Li;Dou Guofang;Zhang Jisheng;Du Huiying(Agro-Environmental Protection Institute,Ministry of Agriculture and Rural Affairs,Tianjin 300191,China;Animal Husbandry Development Service Center of Tianjin Binhai New Area,Tianjin 300450,China;Tianjin Jialihe Livestock Group Co.,Ltd.,Tianjin 301803,China)

机构地区：[1]农业农村部环境保护科研监测所,天津300191 [2]天津市滨海新区畜牧业发展服务中心,天津300450 [3]天津嘉立荷牧业集团有限公司,天津301803

出　　处：《农业工程学报》2020年第14期47-54,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：公益性行业(农业)科研专项(201503106);天津市现代奶牛产业技术体系创新团队建设专项(ITTCRS2018006)。

摘　　要：为研究华北平原种养结合中养殖肥水的合理施用,减少典型农田水肥施用后土壤氮淋溶对地下水的影响。该研究以河北省徐水区夏玉米为研究对象,应用RZWQM2模型验证牛场肥水施用玉米农田的可行性,对2014—2016年玉米种植前后数据进行模型参数率定与验证。验证结果表明,土壤体积含水率的均方根误差和平均相对误差值分别在0.000 6~0.070 7 cm^3/cm^3和0.21%~21.44%之间变化,土壤硝态氮均方根误差和平均相对误差值分别在0.000 8~2.617 3 mg/kg和0.03%~18.58%之间变化,其中牛场肥水施用土壤中硝态氮主要在0~120 cm土层发生变化,说明RZWQM2模型可以用来模拟华北平原牛场肥水施用对土壤水分、硝态氮含量及玉米产量的动态变化。利用率定和验证后的模型进行了夏玉米农田硝态氮淋溶的验证与预测,表明硝态氮淋溶浓度随肥水氮量的增加而增加。RZWQM2模型可以应用于牛场肥水施用农田的模拟,为预测和评估土壤适宜的肥水施用提供更合适的方法。The continuous improvement of the intensive breeding of livestock and poultry had resulted in a large amount of livestock waste,which caused seriously affected the sustainable development of animal husbandry.The ecological model of farmland reuse after anaerobic treatment of breeding waste has been widely used.Wastewater application increased the cumulative nitrogen utilization rate of the winter wheat-summer corn rotation system and reduced the accumulation of nitrogen in the soil;on the other hand,excessive irrigation of farming manure and wastewater increased the intensity of nitrogen leaching losses in the farmland,and nitrate nitrogen leaching affected groundwater and human health.As a result,how to protect groundwater quality and reduce nitrate nitrogen leaching loss while rationally using farming fertilizer and water farmland had become a hot issue for domestic and foreign scholars.This study took summer corn in Xushui District of Hebei Province as the research object,using the RZWQM2 model to verify the feasibility of irrigating the corn on the farmland with dairy effluents,and uses the data from 2014 to 2016 corn to verify the model parameters.The verification results showed that the RMSE values of the water content of each soil layer vary from 0.0006 cm3/cm3 to 0.0707 cm3/cm3 and the MRE values from 0.21%to 21.44%,and the RMSE values of the soil layer nitrate-nitrogen from 0.0008 mg/kg to 2.6173 mg/kg and the MRE values from 0.03%to 18.58%.The results showed that the RZWQM2 model after calibration and verification can be used to simulate the dynamic changes of soil water,nitrogen and crop yields under the application of dairy effluents on summer corn planting in the North China Plain.The utilization rate and verification model carried out the verification and prediction of nitrate nitrogen leaching,which showed that the application of dairy effluents mainly occurred in the 0-120 cm soil layer,and the leaching amount of the deep layer increased with the increase of nitrogen application.It can be seen fro

关 键 词：灌溉 肥水 氮 牛场 夏玉米 RZWQM2模型 

分 类 号：S275[农业科学—农业水土工程]