Residual presence of DDT organochlorine pesticides in agricultural soils and their impact on crop ecological environment
This study delves into the residual status of DDT organochlorine pesticides in agricultural soils of Hanjiaji Town,Huining County,Gansu Province,and explores their potential impacts on soil ecosystems and crop production.Through systematic investigation and analysis,the widespread distribution of DDT in soil is unveiled,with isotopic composition reflecting variations in historical usage and sources among different farmlands.The research further investigates the potential effects of DDT on soil microbial communities,soil physical properties,as well as the growth and quality of wheat crops.The results showed with increasing DDT concentrations,shifts occur in soil microbial community structures,leading to a reduction in microbial diversity,posing a potential threat to soil ecosystem stability.Field experiments reveal that elevated DDT concentrations restrict wheat growth,resulting in a gradual decline in yield and influencing wheat quality,including reduced nutrient content and increased heavy metal accumulation.This study provides a theoretical foundation for a deeper understanding of DDT behavior and potential impacts in agricultural environments,offering scientific support for the formulation of rational soil environmental management policies.
万方数据
维普
