皖北平原不同土壤水分养分差异性研究  

Study on the variability of different soil moistures and nutrients in the Northern Anhui Plain

作　　者：杜明成 张建云 王振龙[4] 刘猛[4] 刘翠善[2,3] 王国庆[2,3] DU Mingcheng;ZHANG Jianyun;WANG Zhenlong;LIU Meng;LIU Cuishan;WANG Guoqing(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Yangtze Institute for Conservation and Development,Nanjing 210098,China;Anhui and Huaihe River Institute of Hydraulic Research,Bengbu 233000,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029 [3]长江保护与绿色发展研究院,江苏南京210098 [4]安徽省(水利部淮委)水利科学研究院,安徽蚌埠233000

出　　处：《水利水运工程学报》2023年第1期120-130,共11页Hydro-Science and Engineering

基　　金：国家自然科学基金资助项目(41830863,52121006);水文水资源与水利工程科学国家重点实验室“一带一路”水与可持续发展科技基金项目(2020nkzd01)。

摘　　要：黄潮土和砂姜黑土面积占皖北平原总面积的87%。砂姜黑土内部含有钙质结核,严重影响土壤性质进而降低作物产量。从土壤理化性质、土壤水力学参数和土壤水分等方面探讨两种土壤差异性,并结合水文气象因素分析影响黄潮土和砂姜黑土土壤水分变异的驱动因素。结果表明:黄潮土和砂姜黑土的pH值和密度存在显著差异,全氮、全磷、碱解氮含量差异不大;黄潮土0~50 cm的有效持水量显著大于砂姜黑土,保水性更好。黄潮土土壤含水率随深度增加逐渐降低,砂姜黑土土壤含水率随深度增加逐渐增大。影响黄潮土土壤含水率变化的主要驱动因素是地下水埋深和降水量;影响砂姜黑土土壤含水率变化的主要驱动因素是地温、地下水埋深和相对湿度。该研究可为进一步改善砂姜黑土土壤性质、提高作物产量提供参考。The area of yellow tide soil(YTS)and lime concretion black soil(LCBS)accounts for 87%of the total area of the Northern Anhui Plain,and the LCBS contains calcareous nodules inside,which seriously affect the soil properties and thus reduce the yield.Therefore,in the study,the differences between the two soils were investigated in terms of soil physical and chemical properties,soil hydraulics parameters and soil moisture,and the driving factors affecting the variability of soil moisture in YTS and LCBS were analyzed together with hydro-meteorological factors.The results show that the pH and bulk weight of YTS and LCBS are significantly different,and the contents of total nitrogen,total phosphorus and alkaline solution nitrogen are not significantly different;the effective water holding capacity of YTS from 0 to 50 cm is significantly larger than that of LCBS,and the water retention is better.Soil water of YTS gradually decreases with increasing depth;soil water of LCBS gradually increases with increasing depth.The main drivers affecting soil water variation in YTS are groundwater depth of burial and rainfall;the main drivers affecting soil water variation in LCBS are ground temperature,groundwater depth of burial and relative humidity.This study can provide a reference for improving the soil properties of LCBS and enhancing crop yield.

关 键 词：黄潮土 砂姜黑土 含水率 理化性质 水分特征曲线 冗余分析 

分 类 号：S152.7[农业科学—土壤学]