吉林延边苹果梨主产区土地质量地球化学评价

目的]明确土壤中地球化学元素对土地质量的影响,为土地利用服务。方法]通过实地调查,在延边苹果梨主产区采集120个样品、测试分析了16种元素和理化性质的相应指标,从土地肥力、土地环境两个方面对研究区进行土地质量地球化学评价。结果]延边苹果梨主要种植区的土地肥力质量属于二等适中水平,其中龙井肥力质量最高、珲春最差;四个区域土地环境质量均处于优等状态,仅在三合、图们个别样点存在Ni、As元素超标现象,总体看来不存在土地重金属污染。结论]延边地区综合土地质量为优良水平,对苹果梨种植很适宜。

Geochemical Evaluation of Land Quality in Yanbian Apple-pear Main Production Areas

Objective] The study aimed to make clear the influence of soil geochemical elements on land quality,to provide the service for land utilization.Method] Based on field survey,120 samples were collected in Yanbian apple-pear main production areas,including Longjing,Sanhe,Huichun and Tumen.16 elements and the corresponding physicochemical properties indices were tested and analyzed.The geochemical evaluation of study areas' land quality from the aspects of land fertility and land environment.Result] Land fertility of Yanbian apple-pear main plantation areas belongs to the second-rate moderate level.Fertility of Longjing area is the highest,while that of Huichun is the lowest.Land environment quality of the 4 areas is at an excellent condition,but Ni and As content exceed the standard in particular samples in Sanhe and Tumen.Generally,there isn't the land heavy metal pollution.Conclusion] The comprehensive land quality of Yanbian area is at a good level,it's suitable for apple-pear plantation.