盘锦红海滩湿地农药残留研究

Study on pesticide residues in Panjin Red Beach Wetland

为了解盘锦红海滩湿地生态系统水体和土壤中农药残留对翅碱蓬退化的影响,于2018、2019、2020年在红海滩风景区A、B、C、D、E、F、G不同监测站位采集水样和土壤样品,对农药的种类及含量进行调查和监测,并初步探讨主要农药残留对湿地翅碱蓬生长的影响。研究结果显示,2018年水体中共有14种农药被检出,其中禾草敌、毒草胺、速灭磷和特丁硫磷的检出率较高。各监测站位土壤中总农药的检出量均比水体中高,土壤中共有11种农药被检出,其中莠去津、扑灭津、西草净和扑草净的检出率较高;2019年水体中共有8种农药被检出,从时间分布来看,7月农药检出量最高,3、4、5月农药检出量稍低;2020年水体中共有7种农药被检出,土壤中有2种农药被检出,水体中西草净含量最高,土壤中莠去津含量最高。因此推测监测站位的翅碱蓬退化现象极有可能是由农药引起的。

In order to understand the impact of pesticide residues in the water and soil of the wetland ecosystem in Panjin Red Beach on the degradation of Suaeda heteroptera,water samples and soil samples were collected at different monitoring stations A,B,C,D,E,F and G in Red Beach Scenic Spot in 2018,2019 and 2020,and the types and contents of pesticides were investigated and monitored.The effects of main pesticide residues on the growth of Suaeda heteroptera were discussed.The research results showed that a total of 14 pesticides were detected in the water body in 2018,of which the detection rates were higher than those of Molinate,Propachlor,Mevinphos and Terbufos.The amount of total pesticides detected in soil was higher than that in water.A total of 11 kinds of pesticides were detected in soil,and the detection rates of Atrazine,Propazine,Simetryn and Prometryn were higher.In 2019,a total of 8 kinds of pesticides were detected in water bodies.From the time distribution,the highest pesticide detection amount was found in July,and slightly lower in March,April and May.In 2020,a total of 7 pesticides were detected in water,and 2 pesticides were detected in soil,with the highest net content of Simetryn in water and Atrazine in soil.Therefore,it is speculated that the degradation phenomenon of the Suaeda heteroptera at the monitoring station is very likely caused by pesticides.