Study Vegetable Greenhouse Of Banned/Restricted Pesticides Exposure And Residual In Yinchuan Suburb

Objective: To investigate the aware and the “use” as well as the knowledge,management, supervision and residual in vegetables and soil of banned/restrictedamong greenhouse farmer’s in Yinchuan suburb, provide the evidence andreference for manage and control in the future of banned/restricted pesticides.Methods: Applying the current status of survey research methods， Choose thelocal residents who lived in Ledu for1years in2013May. By using Cluster randomsampling,330greenhouse farmers of a suburb were chosen as investigated objects.Subsequently, we got total each35vegetable and soil samples using Quincunxsampling to detect the residues of pesticide which were prohibited in China. Theresidues of banned/restricted pesticides were detected by the GasChromatography. The database was established by the EPIDATA3.02softwareand statistical analysis was administrated with the SPSS13.0software.Results: A total of310valid questionnaires were retrieved, effective recovery of93.9%, the awareness rate of banned/restricted pesticides was47.1%. Its level hadstatistical significant in age（χ2=15.779， p＜0.05）, education level（χ2=25.062，p＜0.05）; Education level enter the regression equation in non-conditional logisticregression, it shows that the educational level is influencing factors ofbanned/restricted pesticides. Only1.9%of the farmers know the banned/restrictedpesticides and its specific content.18.1%know that but incomplete,27.1%haveheard it but do not know what concrete forbidden pesticides.Vegetable greenhouses bannedpesticides are present in varying degrees of "using" case, only9.6%of the vegetable growersknow the initial time of banned pesticide in our country. Laboratory tests showed that three types and eight kinds of banned pesticides were detected in greenhouse vegetables, includingorganic phosphorus (including methamidophos, Ethoprophos, phorate, chlorazol phosphorus),Carbamates (including carbofuran), Organochlorine（including p-p’DDE、p-p’DDD andp-p’DDT）, in which p-p’DDT detection rate is the highest and up to42.68%, residues ofmethamidophos is the highest and the residual amount up to0.130mg/kg. Two types and fourkinds of bannedpesticides were detected in greenhouse soil, including carbamates (includingcarbofuran), organochlorine (including p-p’DDE, p-p’DDD and DDT), in which the detectionrate of p-p’DDD and DDT are the highest and all up to74.29%,the residual amount of DDT isthe highest,which up to0.509mg/kg.Conclusion: The banned pesticide awareness rate lower in certain suburban, theuse of banned pesticides is in serious condition, residues and detection rate invegetables and soil is high. Thus, relevant departments should carry outmulti-level propaganda and training about the knowledge of banned/restrictedpesticide and its hazards, strengthening the quality of greenhouse growers throughpublicity, training, and education, to improve the level of knowledge on the use ofpesticides,strengthen the management of pesticides, carry out pesticide residuesin vegetables and soil quickly, routine monitoring.