湖北农业科学2025，Vol.64Issue(6)：45-52,8.DOI:10.14088/j.cnki.issn0439-8114.2025.06.009
基于土柱模拟的红壤坡耕地耕作土体构型对土壤水运移特征的影响
The influence of soil configuration on soil water migration characteristics in red soil slope farmland based on soil column simulation
摘要
Abstract
In order to investigate the influence of soil configuration on soil water migration characteristics in red soil slope farmland,the one-dimensional vertical water infiltration test was used to study soil water infiltration characteristics under different soil configura-tions and straw mulching measures.The results showed that for binary heterogeneous soil,with the increase of soil bulk density in the cultivated soil layer,the advance velocity of the wetting front and water infiltration rate slowed down,resulting in a decrease in filtra-tion capacity.The wetting front movement's time of the simulated no-tillage measure was the longest,which was 64 min and 127 min longer than that of the 25 cm and 35 cm soil column respectively,and the cumulative infiltration amount and infiltration rate of water per unit time were the lowest.The soil water infiltration rate decreased by 5%to 23%after straw mulching,which increased the reten-tion time of soil water and further increased the cumulative water infiltration amount.When a heterogeneous soil column was general-ized into a homogeneous soil model,it showed that if the soil bulk density of the underlying soil layer was constant while the bulk den-sity of the upper soil layer increased,the equivalent saturated water conductivity of the generalized homogeneous soil layer decreased.Additionally,as the thickness of the upper soil layer increased,the equivalent saturated water conductivity also increased.关键词
红壤坡耕地/土体构型/土壤水/运移特征/耕作/土柱模拟Key words
red soil slope farmland/soil configuration/soil water/migration characteristics/cultivation/soil column simulation分类
农业科技引用本文复制引用
莫明浩,刘昭,石芬芬,严志伟,王嘉..基于土柱模拟的红壤坡耕地耕作土体构型对土壤水运移特征的影响[J].湖北农业科学,2025,64(6):45-52,8.基金项目
国家自然科学基金项目(42067020) （42067020）
江西省主要学科学术和技术带头人培养计划青年人才项目(20225BCJ23005) （20225BCJ23005）
江西省水利厅科技项目(202325ZDKT02 （）
202324YBKT08) （）
