Modeling analysis of the characteristics of selenium-rich soil in heavy metal high background area and its impact on main crops

Abstract

In order to improve the product quality of crops, the characteristics of the selenium-rich soil in the heavy metal high background area and its impact on the main crops are studied. Analyze the bioavailability and existence of selenium element, and obtain the classification standard of soil selenium content. Taking Shitai County in Anhui Province as the research area, soil samples from this area were collected, and the results of the collection were made into a field sampling report. The sampling results were analyzed by statistical methods to obtain the measurement results of the selenium content in the soil of the study area. Finally, the LSMM model was established to realize the effective analysis of the characteristics of selenium-rich soil in the heavy metal high background area. The research results show that under different heavy metal pollution conditions, the growth of corn, rice and soybean crops is different. Generally speaking, heavy metals will restrict the healthy growth of crops; the effect of selenium absorption activity will directly or indirectly affect the growth and development of crops; the selenium enrichment rate of crops shows the characteristics of corn>rice>soybeans.