Geochemical investigation and evaluation of main agricultural products in Zhenyuan County,Guizhou
Selenium-rich cultivated land resources are abundant in Zhenyuan County,Guizhou Province.The investigation and evaluation of the geochemical characteristics of agricultural products in this area have certain guiding significance for the development and utilization of characteristic cultivated land resources,optimization of agricultural product industrial layout and rural revitalization in this area.In this paper,the main crops of corn,rice and characteristic crops of red peach and edible rose in Zhenyuan County were sampled and analyzed,and data statistics and related analysis were carried out.The results showed that the selenium enrichment rate of rice was 16.67%and that of red peach was 13.33%.Cd element enrichment was higher in some corn seed samples.The high bioenrichment rate of Cd element and the high content of the bioavailable form of Cd element in soil were the important reasons for the high enrichment of Cd element in corn seeds.Reducing the application of nitrogen fertilizer and appropriately increasing the pH value of cultivated soil should reduce the biological enrichment rate of Cd element in agricultural products.The enrichment of selenium in agricultural products can be improved by appropriately increasing the content of selenium in cultivated soil.
geochemistryseleniumheavy metal elementsmain agricultural productsZhenyuan County
NETL
NSTL
万方数据
