淮河流域土壤氮素含量及空间累积变化  

Soil Nitrogen Content and Spatial Accumulation in Huaihe River Basin

作　　者：孙瑞玲 杜平 阮心玲[3] 孟自力 付洪涛 陈艳红 SUN Ruiling;DU Ping;RUAN Xinling;MENG Zili;FU Hongtao;CHEN Yanhong(Puyang Branch,Ecological Environment Bureau of Puyang City,Puyang,Henan 457100;Agriculture and Rural Bureau of Fengqiu County,Xinxiang,Henan 453399;College of Geography and Environment,Henan University,Kaifeng,Henan 475000;Shangqiu Academy of Agricultural Sciences,Shangqiu,Henan 476000;Ecological Environment Bureau of Puyang City,Puyang,Henan 457000)

机构地区：[1]濮阳市生态环境局濮阳县分局,河南濮阳457100 [2]封丘县农业农村局,河南新乡453399 [3]河南大学地理环境学院,河南开封475000 [4]河南省商丘市农业科学院,河南商丘476000 [5]濮阳市生态环境局,河南濮阳457000

出　　处：《北方园艺》2024年第3期79-85,共7页Northern Horticulture

基　　金：国家自然科学基金资助项目(41371195);国家自然科学青年基金资助项目(41301336);教育部和河南省共建河南大学资助项目(SBGJ0907010)。

摘　　要：以河南省沙颍河段某一乡镇表层土壤(20 cm)为试材,采用ArcGIS 9.0 Inverse Distance Weightin插值法,研究了旱雨期对表层土壤硝态氮、亚硝态氮、铵态氮含量及空间变化的影响,以期为农业种植氮肥合理利用及土壤污染修复提供参考依据。结果表明:旱雨期土壤硝态氮、亚硝态平均含量变化显著,雨期土壤氮素含量远高于旱期;土壤氮素沿河流、沟渠随着时空变化向外呈递减趋势,人口密集区、精耕细作氮肥施用区、地势偏低区、沟渠灌溉区均分布在高值区及次高值区,施肥和人粪尿流失导致氮含量升高,沙颍河也是土壤氮素重要来源之一;土壤中铵态氮与亚硝态氮含量呈正相关性,相关系数为0.434(P<0.01)。Taking the surface soil(20cm)in a township of Shaying River in Henan Province as the test material,the effects of drought and rain on the contents and spatial changes of nitrate nitrogen,nitrite nitrogen and ammonium nitrogen in surface soil were studied by using ArcGIS 9.0Inverse Distance Weightin interpolation method,in order to provide reference for rational utilization of nitrogen fertilizer and remediation of soil pollution in agriculture.The results showed that the average content of nitrate and nitrite changed significantly in the drought and rainfall period,and the content of nitrogen in the rain period was much higher than that in the drought period.Soil nitrogen decreased along rivers and ditches with temporal and spatial changes.Densely populated areas,intensive fertilizer application areas,low-lying areas,and ditch-irrigated areas all distributed in high-value areas and second-high-value areas.Fertilization and human manure loss resulted in increased nitrogen content,and Shaying River was also an important source of soil nitrogen.There was a positive correlation between ammonium nitrogen and nitrite nitrogen content in soil,and the correlation coefficient was 0.434(P<0.01).

关 键 词：土壤 硝态氮 亚硝态氮 铵态氮 空间分布 

分 类 号：S158[农业科学—土壤学]