应用生态学报2025，Vol.36Issue(12)：3668-3674,7.DOI:10.13287/j.1001-9332.202512.014
混层技术对白浆土水分分布和储量的影响
Effects of subsoiling technique on water distribution and storage of the albic soil
摘要
Abstract
The albic soil(profile stratification:black soil layer,albic layer,and illuvial layer)has low permeabil-ity and a compacted albic layer,which is a typical low-yielding soil with constraint factors in Heilongjiang Province.Subsoiling techniques can disturb the albic soil layer and improve water conditions in the rooting zone.In this study,we investigated the effect of two subsoiling techniques,i.e.surface soil interlayer mixing(mixing the albic layer with the illuvial layer)and subsoil interlayer mixing(mixing the black soil layer with the albic layer),on soil wa-ter distribution and storage through monitoring soil water dynamics during the maize growth period.Results showed that the albic layer of control exhibited a bulk density 23.6％higher than that of the black soil layer and an extreme-ly low saturated hydraulic conductivity(0.0013 cm·h-1).This impeded upward water movement during the seed-ling stage of maize when rainfall was scarce,resulting in the formation of dryness in top and albic layers.During the frequent rainfall period after the jointing stage,the low permeability of the albic layer caused water retained in the upper soil layers.After using the subsoiling techniques,the average saturated hydraulic conductivity for 0-60 cm soil layer reached 12.29 cm·h-1 under surface soil interlayer mixing and 14.09 cm·h-1under subsoil interlayer mixing treatments,being 4.9 to 5.7 times of the control.Compared to the control,both techniques increased soil water content in the albic layer by 93.2％during the maize seedling stage.During periods of the jointing stage with frequent rainfalls(July 15 to July 19),the average soil water content in the 0-30 cm layer decreased by 10.3％and 8.3％respectively,and soil water infiltration was improved.Water storage capacity in the rooting zone(0-60 cm)increased by 5.5％during the growing season.Our results indicated that subsoiling techniques ameliorate the uneven soil water distribution within the albic soil profile during the maize growing season,with the subsoil interlay-er mixing showing the better efficacy.关键词
白浆土/土壤含水量/阻滞效应/储水量/玉米Key words
albic soil/soil water content/blockage effect/soil water storage/maize引用本文复制引用
薛明,粟宝莹,宋一欣,卢奕丽,王洪志,王秋菊..混层技术对白浆土水分分布和储量的影响[J].应用生态学报,2025,36(12):3668-3674,7.基金项目
本文由国家重点研发计划项目(2022YFD1500801)资助. （2022YFD1500801）
