2017-2020年陕西省榆林市涌泉根灌下土壤水氮、果树耗水与灌溉制度研究数据集

肥液浓度对涌泉根灌单点源入渗以及双点源交汇入渗土壤水氮运移特性均有明显影响。累计入渗量与入渗历时符合Kostiakov模型，肥液浓度对土壤累计入渗量和入渗率均有明显的促进作用，并使土壤入渗迅速达到稳定。灌水结束时，铵态氮主要分布在灌水器附近，肥液浓度越大，铵态氮的浓度也越高，肥液对铵态氮的分布范围有明显的促进作用；再分布期间，浅层土壤中铵态氮浓度逐渐降低，而深层土壤中铵态氮的浓度逐渐增大。灌水结束时，硝态氮分布与土壤水分的类似，再分布期间，浅层土壤中硝态氮浓度先降低后增加，而深层土壤中硝态氮的浓度逐渐增加。

Fertilizer solution concentration significantly affects the soil water and nitrogen transport characteristics during single-point source infiltration and dual-point source converging infiltration in subsurface bubbler irrigation. Cumulative infiltration and infiltration duration conform to the Kostiakov infiltration model. Fertilizer solution concentration exerts a pronounced promoting effect on both soil cumulative infiltration and infiltration rate, and enables soil infiltration to rapidly reach a steady state. Upon the completion of irrigation, ammonium nitrogen is mainly distributed near the emitters; the higher the fertilizer solution concentration, the higher the ammonium nitrogen concentration, and the fertilizer solution significantly expands the distribution range of ammonium nitrogen. During the post-irrigation redistribution period, the ammonium nitrogen concentration in shallow soil layers gradually decreases, while that in deep soil layers gradually increases. At the end of irrigation, the distribution of nitrate nitrogen is similar to that of soil water. During the post-irrigation redistribution period, the nitrate nitrogen concentration in shallow soil layers first decreases and then increases, while that in deep soil layers gradually increases.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于2017-2020年陕西省榆林市涌泉根灌技术下的土壤水氮运移、果树耗水与灌溉制度研究，数据来源于子洲县现代农业示范园。核心内容包括肥液浓度对单点源和双点源入渗过程的影响，揭示了累计入渗量与入渗历时符合Kostiakov模型，并分析了铵态氮和硝态氮在土壤中的时空分布规律。数据集特点在于提供了详细的灌溉水氮动态数据，适用于农业水资源管理和土壤环境研究，数据量较小（60 KB），通过协议共享方式获取。