检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:周雷 曲潇琳 周涛[3] 马常宝 李建兵 龙怀玉[1] 徐爱国[1] 张认连[1] 李格 ZHOU Lei;QU XiaoLin;ZHOU Tao;MA ChangBao;LI JianBing;LONG HuaiYu;XU AiGuo;ZHANG RenLian;LI Ge(State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China(the Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences),Beijing 100081;Cultivated Land Quality Monitoring and Protection Center,Ministry of Agriculture and Rural Affairs,Beijing 100125;Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002;Institute of Farmland Irrigation,Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Water Use and Regulation,Ministry of Agriculture and Rural Affairs,Xinxiang 453002,Henan)
机构地区:[1]北方干旱半干旱耕地高效利用全国重点实验室(中国农业科学院农业资源与农业区划研究所),北京100081 [2]农业农村部耕地质量监测保护中心,北京100125 [3]宁夏农林科学院农业资源与环境研究所,银川750002 [4]中国农业科学院农田灌溉研究所/农业农村部作物需水与调控重点实验室,河南新乡453002
出 处:《中国农业科学》2023年第21期4272-4287,共16页Scientia Agricultura Sinica
基 金:第三次新疆综合科学考察项目-塔里木河流域土地开发与农业资源调查(2021xjkk0200);科技基础性工作专项项目(2014FY110200A07);宁夏耕地可持续利用与农田生产力提升技术研究与示范项目。
摘 要:【目的】明确宁夏地区土壤颗粒组成的特点及其影响因素,从而为当地的土地利用、农业生产规划等提供科学参考。【方法】根据114个点位的土壤颗粒组成测试数据,研究宁夏地区环境因素对土壤颗粒组成的影响,土壤颗粒组成、土壤质地类型、土壤控制层段颗粒大小的统计学特征,以及土壤颗粒组成的空间分布特征。【结果】(1)宁夏土壤的颗粒组成以砂粒和粉粒为主,土壤砂粒、粉粒和黏粒含量分别为2.4%—97.2%、0.8%—86.0%和0.7%—43.3%,平均含量分别为34.9%、49.6%和15.5%;土壤质地主要以粉壤土(占46.5%)、砂壤土(占17.6%)和壤土(占13.3%)为主,土壤质地类型的变异主要归因于砂粒和粉粒含量的变化。(2)多个环境因素共同影响了宁夏地区土壤颗粒组成,影响力从大到小依次为地貌、母质、小地形、热量、土壤类型、土地利用类型和风速。(3)控制层段的颗粒大小有11种类型,以壤质(占46.5%)、黏壤质(占19.3%)、砂质(占16.7%)为主。(4)宁夏地区很难发育出黏化层,在114个剖面中有26个黏粒含量符合黏化层,但只有2个是确切的黏化层。(5)宁夏灌於表层产生了明显的质地分异。【结论】宁夏土壤颗粒组成以砂粒和粉粒为主,地貌和母质是影响土壤颗粒组成的最主要因素。【Objective】The aim of this study was to clarify the characteristics and influencing factors of soil particle composition in Ningxia,so as to provide the scientific reference for local land use and agricultural production planning.【Method】Based on the soil particle composition test data at 114 sites in Ningxia,the effects of environmental factors on soil particle composition,the statistical characteristics of soil particle composition,soil texture type,particle size of soil control layer,and the spatial distribution characteristics of soil particle composition were studied.【Result】(1)The content of sand,silt and clay in Ningxia soil were 2.4%-97.2%,0.8%-86.0%and 0.7%-43.3%,respectively,and the average content were 34.9%,49.6%and 15.5%,respectively;Soil texture was mainly composed of silty loam(46.5%),sandy loam(17.6%)and loam(13.3%),and the variation of soil texture types was mainly attributed to the change of sand and silt content.(2)A number of environmental factors jointly affect the soil particle composition in Ningxia,and the influential factors were geomorphic factors,parental material type factors,small topographic factors,thermal factors,soil type factors,land use type factors and wind speed factors in turn from large to small.(3)There were 11 types of particle sizes in the control interval,among which loamy(46.5%),clay(19.3%)and sandy(16.7%)were the main ones.(4)It was difficult to develop argic horizon in Ningxia.Among 114 sections,26 clay particles were consistent with cohesive layer,but only 2 were exact argic horizon.(5)Siltigic epipedon of Ningxia produced obvious texture differentation.【Conclusion】The soil particle composition in Ningxia was mainly sand and silt,while landform and parental material were the most important factors affecting the particle composition.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.200