论文部分内容阅读
安徽省耕种土壤中的有效铜平均含量较高,pH<7为4.11ppm(0.1NHCl提取),pH≥7为1.92ppm(DTPA—CaCl_2—TEA提取),以水稻土平均含量最高。pH<7的土壤,缺铜率在50%以上的依次为红壤>紫色土>石灰(岩)土>黄棕壤,紫色岩风化物>第四纪红粘土>碳酸盐岩风化物>泥质页岩风化物>酸性岩风化物。皖南山丘是安徽省缺铜土壤的主要分布地区。安徽省pH≥7的耕种土壤中的有效铁(提取方法如铜)平均含量16.67ppm,总体水平较高。紫色土和潮土(多分布在淮北、皖南和沿江)是主要的缺铁土壤。
The average content of available copper in cultivated soils in Anhui Province is relatively high, with pH <7 being 4.11ppm (0.1N HCl extract) and pH≥7 being 1.92ppm (DTPA-CaCl 2-TEA extraction), with the highest average content of paddy soil. The results showed that the soil with pH less than 7 was red soil> purple soil> limestone> yellow brown soil, purple rock weathering> Quaternary red clay> carbonate weathering> mud Shale Weathering> Acid Rock Weathering. The southern Anhui hills are the main areas of copper-deficient soil in Anhui Province. The average content of available iron (extraction method such as copper) in cultivated soils with pH≥7 in Anhui Province was 16.67ppm, with an overall high level. Purple soil and alluvial soil (mostly distributed in Huaibei, southern Anhui and along the Yangtze River) is the main iron deficiency soil.