Soil Quality Assessment of a Vegetable Field in Zunyi
In order to produce health and vegetables,an survey on soil sampling was conducted in a vegetable field in Zunyi.The results showed as follows:① The average content of organic matter was 39.65 g·kg-1,and the average content of total nitrogen was 2.39 g·kg-1,which was at a relatively high level.Soil total phosphorus at the moderate level,and soil total potassium at the moderate lower level.②The contents of heavy metals As,Pb,Cu and Zn in soil were all lower than the screening values of soil pollution risk control standard for the Soil Environmental Quality Control Standard for Soil Contamination of Agricultural Land(GB 15618-2018),while Cd slightly exceeded the screening values for light pollution,and the soil comprehensive pollution index is the warning level.The results show that the vegetable base has potential risks,some measures should be taken to improve the soil.In addition,the level of Cd in the edible parts of vegetables should be monitored to ensure that the quality of vegetables meets the national food safety standards.
万方数据
维普
