不同壤质土有效铜含量有差异，轻壤土和中壤土含量较高，分别为3.24mg

Different loamy soils have different effective copper contents. Light loam and medium loam have higher contents, 3.24mg/kg and 3.2mg/kg, respectively, and the variation ranges are 0.51~20.4mg/kg and 0.8~11.56mg/kg respectively; effective The highest value of copper content appeared in light loam; the content of sandy loam was the lowest, with an average of 2.73mg/kg and a variation of 0.5~20.0mg/kg. The order of available copper content in each loamy soil from high to low is: light soil>medium soil>sand soil

There are differences in the effective copper content of different soil soil, light soil and medium soil content is higher, 3.24mg/kg and 3.2mg/kg, respectively, the variation is 0.51 to 20.4mg/kg and 0.8 to 11.56mg/kg respectively; The effective copper content of each soil soil is from high to low in order: light soil and sand.

The content of available copper in light loam soil and medium loam soil was 3.24 mg / kg and 3.2 mg / kg, respectively, with the range of 0.51-20.4 mg / kg and 0.8-11.56 mg / kg, respectively; the highest content of available copper appeared in light loam soil; the lowest content of available copper was 2.73 mg / kg, ranging from 0.5 to 20.0 mg / kg. The order of available copper content in each loamy soil was light soil > medium soil > sandy soil<br>