Eco-geochemical Characteristics of Muskmelon Root Soil in Planting Region of Hetao Irrigation Area of Inner Mongolia  

内蒙古河套甜瓜种植区根系土生态地球化学特征研究（英文）

作　　者：侯俊琳[1] 

机构地区：[1]内蒙古自治区地质调查院,内蒙古呼和浩特010020

出　　处：《Agricultural Science & Technology》2016年第9期2147-2151,共5页农业科学与技术（英文版）

基　　金：Supported by National Land and Resources Investigation Program(200414200005)~~

摘　　要：[Objective] The aim was to evaluate the eco-geochemical characteristics and geochemistry conditions of root soil in muskmelon planting area, evaluate the soil environment quality in Hetao irrigation area and provide scientific basis for the musmelon planting in this area. [Method] Root system soil sample and plow pan sample were collected from the main muskmelon planting area in Hetao irrigation area, so as to analyze the contents of heavy metal elements. By comparing with the Soft Environmental Quality Standard （GB15618-1995）, the research explored whether the heavy metal elements in root system met the national standard. [Result] Heavy metal elements in root system soil had the maximum content in recession area of Yellow River, followed by saline soils. The content of heavy metal elements in chestnut-brown soil was the minimum. Harmful elements As, Cd, Hg, F and Pb in anthropogenic-alluvial soil of Hetao irrigation area showed enrichment characteristics in earth surface, with zonality vertically. Trace elements Cu and Zn, and beneficial elements P, K20, CaO, MgO and Se showed depletion. In anthropogenic-aUuvial soil of Ulansuhai of the Yellow River, harmful elements As and Cd showed significant enrichment in root system soil, while other elements showed depletion or was close to background value. In soil of plow pan, both beneficial component and harmful component showed enrichment characteristics. [Conclusion] Hetao irrigation area has the ideal geochemical conditions and heavy metal elements in muskmelon area meet the national standards.[目的]评价甜瓜种植区的根系土的生态地球化学特征和立地地球化学条件。研究河套地区土壤环境质量,为本地区密瓜种植提供科学依据。[方法]通过系统采集河套地区甜瓜主要种植区的根系土样品和犁底层样品并分析其中的重金属元素含量,通过与《土壤环境质量标准》(GB15618-1995)对比,确定根系土中重金属元素是否符合国家标准。[结果]根系土中重金属元素在黄河退水区含量最高,盐土次之,栗褐土中最小。后套地区中上游灌淤土中有害元素As、Cd、Hg、F、Pb在地表表现为富集特征,垂直方向上具有一定的分带性;微量元素Cu、Zn,有益元素P、K2O、Ca O、Mg O、Se表现为贫化;在黄河退水区乌梁素海一带灌淤土中,有害元素As、Cd在地表根系土中表现为明显富集,其他元素贫化或接近背景值;在犁底层土壤中,无论是有益组分还是有害组分均呈富集特征。[结论]河套地区立地地球化学条件优秀,种植的甜瓜重金属元素符合国家食品卫生标准。

关 键 词：Root system soil Anthropogenic-alluvial soil Saline soil Eco-geochemical characteristics 

分 类 号：S652[农业科学—果树学]