Effect of Water Retaining Material on Soil Nitrate Nitrogen and Ammonium Nitrogen Dynamic Change in Hetao Irrigation Area
ZHAO Chunxiao
ZHENG Haichun
YANG Yanming
HONG Mei
GAO Fansheng
Abstract：To study non-point source pollution detection and control measures of Hetao irrigation area of Inner Mongolia agricultural,chemical fertilizer field soil leaching tests were used and soil nitrate nitrogen and ammo-nium nitrogen dynamic change in the Hetao irrigation farmland under the water-retaining material processing were analyzed.The results showed that water-retaining material could effectively adsorb NO3--N and NH4+-N leaching amount in shallow soil and it could reduce nutrient leaching.So it had the protecting of fertilizer ap-plied delay effect.Compared to CK,soil NO3--N accumulation amount of water-retaining material processing treatments increased by 20.49%in corn seedling period,but increased by 13.98%on average in the harvest peri-od;Soil NH4+-N accumulation amount increased by 35.21%on average,but increased by 28.93%on average in the harvest period.Water-retaining material effectively inhibited nitrogen leaching losses and improved the utili-zation rate of nitrogen.At the same time,it could guarantee the effective nitrogen supply of following corn stage and avoid a large number of accumulations in a short time.So to a certain extent,water-retaining material reduc-es the fertilizer non-point source pollution and provides the effective measures for agricultural pollution control.
Keywords：water saving materialsresidue in soilnitrogen utilization ratenutrient leaching loss
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 76-80 )