膜下滴灌条件下碳酸盐草甸土氮素分布的研究  

Nitrogen distribution in carbonate meadow soil under condition of plastic mulching drip irrigation

作　　者：周连仁[1] 郑余[1] 陈宵宇[1] 

机构地区：[1]东北农业大学资源与环境学院,哈尔滨150030

出　　处：《东北农业大学学报》2013年第8期34-38,共5页Journal of Northeast Agricultural University

基　　金：公益性行业(农业)科研专项经费(200903001-06-6)

摘　　要：以黑龙江省肇州县碳酸盐草甸土为研究对象,针对该区域土壤盐碱化现象严重,土地生产力低下以及水资源缺乏等情况,开展基于水盐调控的盐碱旱地生产适宜性研究。根据不同的滴灌量设5个处理;根据不同的滴灌时期设6个处理,通过测定土壤铵态氮,硝态氮含量,总结节水灌溉的最优模式,实现盐碱旱地土壤质量与生产力的提升,为半干旱半湿润地区盐碱土的改良与利用提供理论依据。This research take the Heilongjiang province Zhaozhou County carbonate meadow soil as the research object, according to the regional soil salinization phenomenon is serious, low land productivity and water scarcity, the suitability of saline-alkali land production of salt and water regulation based on, 5 treatments according to different quantities of drip irrigation; 6 treatments according to different irrigation period, through the determination of soil ammonium nitrogen, nitrate nitrogen content, summed up the optimal model of water saving irrigation, realize the saline-alkali soil quality and productivity of dryland promotion, and provide a theoretical basis for the improvement and utilization of saline-alkali soil in arid and semi-arid regions.

关 键 词：滴灌量 滴灌时期 铵态氮 硝态氮 

分 类 号：S156.4[农业科学—土壤学]