明溪县富硒土壤资源调查及影响因素探讨
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摘要
本文较系统的总结了明溪县富硒土壤资源的分布特征。明溪县耕地表层土壤硒元素含量范围为0.07mg/kg～1.02mg/kg,土壤硒元素含量等级为适量及高等级面积比占耕地面积的50.92%,面积约63.5km~2。不同地质背景和土壤类型对土壤硒分布均存在较大差异。调查表明区域地质背景是控制土壤硒含量元素的主要因素,土壤黏粒含量、有机质含量、酸碱性与土壤硒元素含量具有明显的正相关性。
This paper systematically summarizes the distribution characteristics of selenium rich soil resources in Minxi county. The content of selenium in the surface soil of Mingxi County is 0.07-1.02 mg/kg, and the content of selenium in the soil is appropriate and high-grade area is 50.92 %, area of approximately is 63.5 km~2. The distribution of selenium in soil was different between different Geological background and soil type. The investigation showed that the regional Geological background is the main factor in controlling the selenium content of soil. The content of soil Sticky particles, organic matter, Acid-alkaline have obvious positive correlation with the content of soil selenium.
This paper systematically summarizes the distribution characteristics of selenium rich soil resources in Minxi county. The content of selenium in the surface soil of Mingxi County is 0.07-1.02 mg/kg, and the content of selenium in the soil is appropriate and high-grade area is 50.92 %, area of approximately is 63.5 km~2. The distribution of selenium in soil was different between different Geological background and soil type. The investigation showed that the regional Geological background is the main factor in controlling the selenium content of soil. The content of soil Sticky particles, organic matter, Acid-alkaline have obvious positive correlation with the content of soil selenium.
引文
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[2]中华人民共和国地方病与环境秃集编篡委员会.中华人民共和国地方病与环境图集[M].科学出版社,1989.
[3]土地质量地球化学评价技术规范(DZ/T 0295-2016).中华人民共和国国土资源部.
[4]赵成义.土壤硒的生物有效性研究[J].中国环境科学,2004,24(2):184-187.
[5]廖金凤.土壤粒级和酸度对硒吸附固定的影响[J].广东微量元素科学,1999(1):47-49.
[6]赵美芝.影响土壤中硒有效性的若干因子[J].土壤,1991(5):236-240.
[7]刘腾.广东省龙门县典型富硒土壤区农作物硒含量的影响因素探讨[J].西部资源,2017(3):168-168.
[8]刘兵,江文耀.新疆发现面积达千余平方公里富硒土壤资源[J].西部资源,2014(3):66-66.