贵州省赤水市耕地富硒土壤地球化学特征

田文明; 牟军; 唐婷婷; 唐佐其; 王安华; 强希润

田文明,牟军,唐婷婷,唐佐其,王安华,强希润.贵州省赤水市耕地富硒土壤地球化学特征[J].贵州地质,2020,37(3):305-312

贵州省赤水市耕地富硒土壤地球化学特征

Selenium deficiency and toxicity in the environ-ment[G]/ /Selinus OEssentials of Medical Geology:Revised Edtion，ElsevierGeochemical Characteristics of Selenium-rich Soil in Chishui City,Guizhou Province

投稿时间：2020-03-20

DOI：

中文关键词: 富硒耕地土壤影响因素生态效应贵州赤水

英文关键词:Selenium-rich Cultivated soil Influencing factors Ecological effect Chishui, Guizhou

基金项目:贵州省赤水市耕地质量地球化学调查评价(黔地矿耕调 2017-27)；贵州省地矿局科研项目(黔地矿科合[2017]29号)、贵州省科技厅科技计划(黔科合支撑[2020]4Y034号)、科技计划项目(黔科合平台人才[2018]5626)贵州省地质调查院院士工作站联合资助。

作者	单位
田文明	贵州省地质调查院，贵州贵阳550081 中国地质大学，湖北武汉430074
牟军	贵州省地质调查院，贵州贵阳550081
唐婷婷	贵州省地质调查院，贵州贵阳550081
唐佐其	贵州省地质调查院，贵州贵阳550081
王安华	贵州省地质调查院，贵州贵阳550081
强希润	贵州省地质调查院，贵州贵阳550081

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中文摘要:

通过1∶50000耕地质量地球化学调查评价，研究了赤水市耕(园)地土壤环境质量，硒元素分布、影响因素及其生态效应。结果表明，研究区耕(园)地土壤总体以酸性为主，无重金属超标现象，土壤环境质量优良。耕(园)地土壤硒平均含量为041 mg·kg-1，富硒及硒适量的耕(园)地面积占全市耕地面积分别为4782%、5175%。影响土壤硒元素含量的主要因素有成土母质、土壤类型、土壤pH值及有机质含量等。区内产出天然富硒稻谷、竹笋、金钗石斛等农作物，但存在少数农作物镉元素超标现象。赤水市耕地土壤环境质量优良，并且大面积分布富硒土壤资源，开发富硒土壤和农产品具有优势和潜力，但同时应注意耕地土壤酸化趋势和个别农产品重金属超标现象。

英文摘要:

Soil environment quality, soil selenium content distribution characteristics, influencing factors and ecological effects of selenium in cultivated land in Chishui county were studied by means of 1∶50000 geochemical investigation and evaluation of cultivated land quality. The results showed that the soils in the cultivated area were mainly acidic, no heavy metal contamination, and the soil environment quality was excellent. The average surface soil selenium content of cultivated land is 041 mg·kg-1.The cultivated land area rich in selenium and the cultivated land area with proper amount of selenium account for 47.82% and 51.75% of the cultivated land area of the county.It is found that soil parent material, soil type, soil pH value and organic matter content are important factors affecting soil selenium content. Natural selenium-rich rice, bamboo shoots, dendrobium and other crops were produced in the area, but a few crops exceeded the standard of cadmium. The soil environment quality of cultivated land in Chishushui county is good, and the soil resources rich in selenium are distributed in a large area. The development of selenium-rich soil and agricultural products has advantages and potential, but the trend of soil acidification and the phenomenon of excessive heavy metals in some agricultural products should be paid attention to.

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