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对辽宁省鞍山南部地区的生态地球化学调查和研究表明,调查区土壤状况良好,氮、磷、钾、有机质和其它植物必须元素大都处于丰富水平。根据土壤中元素含量特征,将调查区进行了分区和评价。土壤环境质量除汞含量(平均0.25 mg/kg)外,各污染指标没有出现超标现象。对本区特色果品南果梨研究表明,土壤中Fe,Mn,Mg,K,Co元素较高的含量决定了南果梨的独特品质。南果梨生长体系的稀土元素总含量从立地土壤到树冠有:土壤>树叶>树枝>果实。据GB14935-94,食用南果梨果实是安全的。由此,将本区南果梨种植区划分成最佳、优势、中势和不宜种植4个区。
Ecological geochemical investigations and studies in the southern Anshan area of Liaoning Province show that the soils in the survey area are in good condition and most of the necessary elements of nitrogen, phosphorus, potassium, organic matter and other plants are at an abundant level. According to the characteristics of soil element content, the survey area was divided and evaluated. Soil environmental quality except mercury content (average 0.25 mg / kg), the pollution indicators did not appear excessive. The research on the characteristic fruit of Nanguo Pear in this area shows that the higher content of Fe, Mn, Mg, K, Co in soil determines the unique quality of Nanguo Pear. The total content of rare earth elements in the Nanguo pear growing system ranges from soil to soil: soil> leaf> branch> fruit. According to GB14935-94, Nanguo pear fruit consumption is safe. As a result, the area of South fruit pear cultivation area is divided into the best, dominant, potential and should not be planted in four districts.