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采用定点调查方法研究了五莲植烟土壤、烟叶中重金属、农药残留状况。土壤中的铅、镉、汞、六六六的含量指标低于土壤自然背景值,大部分土壤中的滴滴涕含量也低于土壤自然背景值。烟叶中铅、镉、汞含量处于较低水平,有机氯、有机磷、拟除虫菊酯等杀虫剂、杀菌剂烟叶中残留普遍较低,部分有机磷杀虫剂残留相对较高。五莲烟区具有发展低残留优质烟叶的优越自然条件,但需进一步规范农药的使用。
The fixed-point investigation method was used to study the residuals of heavy metals and pesticides in Wulian tobacco-planting soil and tobacco leaves. The content of Pb, Cd, Hg and HCH in soil is lower than the natural background value of soil, and the content of DDT in most soil is also lower than the natural background value of soil. The contents of lead, cadmium and mercury in tobacco leaves were in a low level. The residues of organochlorine, organophosphorus and pyrethroid insecticides and bactericide were generally lower, and some residues of organophosphate insecticides were relatively high. The Wulian tobacco area has the superior natural conditions for the development of low-residue and high-quality tobacco leaves, but the use of pesticides needs to be further regulated.