当前位置: 首页 > 文章 > 改良灌溉施肥方式下硝态氮流失的模拟研究 湖北农业科学 2013,52 (8) 1779-1782
Position: Home > Articles > Simulation Study on Nitrate Nitrogen Loss under Improved Irrigation and Fertilization Mode Hubei Agricultural Sciences 2013,52 (8) 1779-1782

改良灌溉施肥方式下硝态氮流失的模拟研究

作  者:
何佳吉;余钟波;向龙;杨传国
单  位:
河海大学水文水资源学院
关键词:
土壤;硝态氮;淋失;Hydrus-1D模型
摘  要:
土壤硝态氮的淋失是水环境污染的主要来源。以江苏省宜兴市梅林流域硝态氮的淋失为研究对象,运用Hydrus-1D模型模拟了2010-2011年田间水分与硝态氮的迁移过程。结果表明,结合野外实验观测数据,Hydrus-1D模型反映了土壤中水分与硝态氮的迁移过程,控制土壤中水分的向下运动以及土壤中硝态氮的浓度可以有效地减少硝态氮的淋失。采用的改良灌溉施肥方案既满足了农作物对氮素的生长需求同时减少了硝态氮淋失量。
译  名:
Simulation Study on Nitrate Nitrogen Loss under Improved Irrigation and Fertilization Mode
作  者:
HE Jia-jia,b,YU Zhong-boa,b,XIANG Longa,YANG Chuan-guoa(a.College of Hydrology and Water Resources;b.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,China)
关键词:
soil;nitrate nitrogen;loss;Hydrus-1D model
摘  要:
Soil nitrate nitrogen loss is the main source of water pollution.Soil nitrate nitrogen movement of Meilin basin,Yixing City in Jiangsu province was studied.Soil water movement and nitrate nitrogen movement were simulated by Hydrus1D model from 2010 to 2011.The results showed that combined with field observed data,the simulation data could reflect soil water movement and soil nitrate nitrogen movement.The movement of soil nitrate nitrogen were controlled by water movement and concentration gradient.The modified irrigation and fertilization management pattern did not only meet the demand of crop but also reduce nitrate nitrogen loss.

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