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农药主要包括杀虫剂、杀菌剂及除草剂,农业生产中大量而持续的使用农药,导致其在土壤中不断累积,造成土壤农药污染。土壤中的农药污染可通过土壤-作物系统迁移积累影响农作物的产量和质量,乃至农产品的安全,最终经由食物链直接或间接影响人类健康。从保护环境的角度,各种化学药物的残留期越短越好;从植物保护角度,如果残留期太短,就难以达到理想的杀虫、治病、灭草的效果[1-2]。因此,评价土壤中农药残留量,对防治
Pesticides mainly include insecticides, bactericides and herbicides, and the large and continuing use of pesticides in agricultural production causes them to accumulate in the soil, causing soil pesticide contamination. Pesticide contamination in soils can affect the yield and quality of crops through the accumulation of soil-crop system migration, as well as the safety of agricultural products, which eventually directly or indirectly affect human health via the food chain. From the perspective of environmental protection, the shorter the retention period of various chemical drugs, the better. From the point of view of plant protection, if the residual period is too short, it will be difficult to achieve the desired effects of insecticide treatment, curative treatment and weed control [1-2]. Therefore, the evaluation of soil pesticide residues, prevention and control