Study results showed that the best combination of nutrient element(K,Fe,Mn,Zn,Ca,Mg,P,etc) and the special geological environment were the main reason of the high quality of agricultural products.

• 研究表明,该区特定的地质背景、最优的混源土壤条件、最佳的K、Fe、Mn、Zn、Ca、Mg、P等有益营养元素组合和特定的山盆地形地貌与水文地质条件,是形成该区优质农作物的主要原因。