沈阳市农田土壤农药残留水平

The Pesticide Residues in Farmland Soils of Shenyang

对沈阳市农田（水田、旱田、菜田）土壤中农药残留调查表明，禾大壮、丁草胺、敌百虫、辛硫磷、阿特拉津、乐果、氧化乐果、溴氰菊酯、１６０５残留量测定结果均低于检出限。六六六残留几何平均水平为０．０１１ｍｇ／ｋｇ．ＤＤＴ为０．０３９ｍｇ／ｋｇ；旱田、水田六六六异构体的残留主要是β－ＢＨＣ，ＤＤＴ异构体的残留主要是ｐ，ｐ＇－ＤＤＥ．

The results of pesticide residue investigation for paddy soil,dry farmland soil and vegetable farm soil in Shenyang showed that the residues of ordram,butachlor,trichlorphon, phoxim,atrazine,dimethoate,omethoate,deltamethrin and parathion were all lower than the detectable level;The geometrical mean levels of BHC and DDT residues were 0.011 mg/kg and 0.039 mg/kg respectively; The BHC residue in paddy soil was lower than that of in vegetable farmsoil;The DDT residues in both soils were in the same level;The main form of BHL isomer residue was β-BHC and the main form of DDT isomer residue was p,p'DDE in all the investigated soils.