新的研究发现，日本东北部部分地区的放射性物质含量超过可进行安全农业生产的水平。
New research has found that radioactive material in parts of north-eastern Japan exceeds levels considered safe for farming.
试验于2001-2002年在东北农业大学小麦研究室盆栽场进行。
The studies were carried out in Wheat Lab of Northeast agricultural university in Harbin from 2001 to 2002.
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