农药环境人类化学农药具有使用方法简便、成本低、收效快等优越性,因此在农业上得到广泛使用。但是事物都是一分为二的,化学农药有它保证农业增产的一面,也有它有害的一面。这就是现有的化学农药对有益生物和人体具有不同程度的毒性,尤其是随着农药使用范围的扩大和使用量的不断增加,农作物上农药残留物质和含量也随着增加,同时污染自然环境(土壤、水域和大 Pesticide Environment Human chemical pesticide has the advantages of simple and convenient use, low cost and quick response. Therefore, it is widely used in agriculture. But things are divided into two parts. Chemical pesticides have its side that guarantees the increase of agricultural output, and it also has its harmful side. This is the existing chemical pesticides on the beneficial organisms and humans have varying degrees of toxicity, especially with the expansion of the use of pesticides and the use of increasing, pesticide residues on crops and the content of substances also increases, while pollution of the natural environment (Soil, water and big