The postcode of Chengkou County, Chongqing City, China is 405900.
中国大陆重庆市城口县的邮政编码是 405900 。
Based on an on - the - spot survey of the cultivated plants and economically - important wild plants in Chengkou county, Se content in 8 main resource plants was determined.
在对重庆城口县主要农作物和野生经济植物进行实地调查的基础上，确定以8种主要资源植物为研究对象，对其含硒量及其分布进行了系统研究。
Based on an on - the - spot survey of the cultivated plants and economically - important wild plants in Chengkou county, Se content in 8 main resource plants was determined.
在对重庆城口县主要农作物和野生经济植物进行实地调查的基础上，确定以8种主要资源植物为研究对象，对其含硒量及其分布进行了系统研究。
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