苏中地区小麦籽粒和土壤中有机磷农药残留分析

Investigation and Analysis of Organophosphorus Pesticide Residues in Wheat Grain and Field Soil in the Middle Region of Jiangsu Province

2003年在江苏省苏中地区7个县(市)分别选择具有代表性的高、中、低3种不同施药水平田块,对小麦籽粒和土壤中7种有机磷农药残留进行检测。结果表明:小麦籽粒和土壤有机磷农药检出率分别为95.2%和100%,农药残留现象比较普遍;中等毒性有机磷农药毒死蜱和乐果在苏中地区普遍存在;小麦籽粒中7种有机磷农药平均浓度均不超标,对建立无公害优质专用小麦生产体系有一定基础。

In 2003, the residues of seven organophosphorus pesticides in grain and soil in the wheat fields with three different representable pesticide dosages in seven counties of the middle region of Jiangsu province were investigated. The results were as follows, the detection rates of organophosphorus pesticide residues in grain and soil in wheat fields in this region were 95.2% and 100%, respectively, indicating organophosphorus pesticide residues were very common. Chlorpyrifos and dimethoate, which were middle-poisonous organophosphorus pesticides, were common in the middle region of Jiangsu. The average concentrations of seven kinds of organophosphorus pesticides in the wheat grains were lower than the residue standard, indicating that there is a certain foundation for establishing the high-quality, special-end-use and nuisance less wheat production system.