上海不同地区作物硒和发硒含量的调查分析瞿建国徐伯兴龚书椿为了解上海地区作物硒和人发硒水平，于１９９４年进行了调查和分析。１材料与方法１．１调查范围及对象根据上海市土壤硒元素背景值，在不同背景值的地区设４个采样点，分别位于南汇黄路新民村（背景值为≤０．... Investigation and Analysis of Selenium and Selenium Content in Crops in Different Regions of Shanghai Qu Jianguo, Xu Baixing and Gong Shunchun In order to understand the selenium and selenium levels of crop in Shanghai, the survey and analysis were conducted in 1994. 1 Materials and methods 1.1 Scope of investigation and objects According to the background of selenium in Shanghai soil, four sampling points were set up in different background values, which are respectively located in Xinmin Village, Huang Hui Road, Nanhui (the background value is ≤0 ...