摘要
依据李家熙的土壤硒含量划分标准,三原—阎良地区土壤可划分为硒土壤（0.2～0.4 mg/kg）和富硒土壤（＞0.4 mg/kg）,土壤中硒的强有机结合态、腐殖酸结合态和水溶态的总和占全硒量的百分之五十以上,在土壤碱性环境下容易被植物吸收利用.
According to Li Jiaxi＇ s classification standard of selenium content in soil, seleniumrich soil occurring in Sanyuan-Yanliang area can be attributed to selenium-bearing soil （0. 2 - 0.4 mg/kg） and selenium-rich soil （ 〉 0.4 mg/kg） . The strong organic binding state, humic acid bound state and the sum of water soluble states of selenium in soil are over 50% of total selenium content, which are easily absorbed and used by plants under alkaline environment.
出处
《陕西地质》
2016年第1期31-37,共7页
Geology of Shaanxi
基金
陕西省政府公益性地质调查项目<关中-天水经济区(关中盆地)富硒区地球化学调查与评价>
关键词
富硒土壤
硒赋存形态
PH值
微量元素
selenium-rich soil
selenium speciation
pH value
trace element
