灌溉排水学报2017，Vol.36Issue(2)：76-80,5.DOI:10.13522/j.cnki.ggps.2017.02.012
保水材料对河套灌区土壤硝态氮和铵态氮动态变化的影响
Effect of Water Retaining Material on Soil Nitrate Nitrogen and Ammonium Nitrogen Dynamic Change in Hetao Irrigation Area
摘要
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.关键词
保水材料/土壤残留/氮素利用率/养分淋溶损失Key words
water saving materials/residue in soil/nitrogen utilization rate/nutrient leaching loss分类
农业科技引用本文复制引用
赵春晓,郑海春,杨彦明,红梅,郜翻身..保水材料对河套灌区土壤硝态氮和铵态氮动态变化的影响[J].灌溉排水学报,2017,36(2):76-80,5.基金项目
内蒙古河套灌区面源污染监测与综合防治技术体系研究项目 （）
