开阳农作物硒含量及影响因素分析  

Analysis on the selenium contents level and restriction factors in the crops in Kaiyang

作　　者：仝双梅[1] 连国奇[2] 代稳[1] 

机构地区：[1]六盘水师范学院环境与资源科学系,贵州六盘水553004 [2]六盘水师范学院化学与化学工程系,贵州六盘水553004

出　　处：《广东农业科学》2013年第8期92-94,100,共4页Guangdong Agricultural Sciences

基　　金：贵州省自然科学基金(黔科合J字[2008]2016号)

摘　　要：采用氢化物发生原子荧光法对开阳县禾丰乡和冯三镇的土壤和农作物硒含量进行了测试,研究了作物硒含量与作物富集系数、土壤总硒含量、土壤水溶性硒含量及土壤pH值的关系,旨在为开阳地区富硒农作物科学种植及提高作物品质提供科学依据。结果表明:供试地区作物硒含量范围为0.007～0.71 mg/kg,均值为0.18 mg/kg,大部分达到足硒、富硒等级,有的甚至达到高硒等级,只有少数处于低硒水平;作物硒含量与土壤总硒含量、水溶性硒含量及土壤pH值呈明显的正相关,而与作物富集系数没有明显的关系。This paper analyzed the content of Se in soils and crops by AFS, and studied the relationship of crops Se contents and the enrichment ratio of crops, soils total Se contents, water-solubility of soils and soils pH in Hefeng Town and Fengsan Town in the region of Kaiyang County, with the purpose to provide scientific methods of scientific planting of Se-rich crops and enhance crops quality in Kaiyang. The results indicated that crop contents were within the range of 0.007～0.71 mg/kg, with an average of 0.18 mg/kg, most crops reached Se-enrichment or Se-high level, a small amount were in Se-lack level; there were obvious positive correlation between the crops Se contents and soils total Se contents, water-solubility of soils and soils pH, and no clear correlation in enrichment ratio of crops.

关 键 词：开阳 土壤总硒 土壤水溶硒 富集系数 

分 类 号：S131[农业科学—农业基础科学]