湖南隆回县主要农作物富硒情况及农作物-根系土中重金属关系的影响因素分析

Analysis On Selenium Enrichment of Main Crops and Influencing Factors of Heavy Metals In Crop Root Soil In Longhui,Hunan

在“湖南省隆回县土地质量调查”项目的资助下,本研究系统地采集测试了隆回县农作物及根系土样品。采用数据统计、相关性分析等方法,分析农产品富硒及重金属含量的情况,同时着重研究了农产品与土壤中重金属含量关系。研究结果表明:隆回县农作物普遍富硒,并且每种农作物的富硒能力不同;隆回县主要农作物受到重金属污染的程度较小;土壤有机质和pH是影响作物对土壤重金属吸收累积的重要环境因素。

Under the support of"land quality survey of Longhui County,Hunan Province",the samples of crops and root soil were collected and tested systematically.The content of selenium and heavy metals in agricultural products were analyzed by means of classification statistics,correlation analysis and content distribution scatter diagram.The relationship between the content of heavy metals in agricultural products and soil was emphatically studied.The results showed that the crops in Longhui County are rich in selenium,and the ability of each kind of crops was different.The main crops in Longhui County are less polluted by heavy metals,and soil organic matter and pH are the important environmental factors that affect the absorption and accumulation of heavy metals.