多菌灵在云杉幼苗及土壤中残留动态的研究  

STUDIES ON RESIDUE DYNAMICS OF CARBENDAZIM IN SPRUCE SEEDLING AND SOIL

作　　者：刘振坤 岳朝阳 张新平 

机构地区：[1]新疆林业科学研究院林业研究所

出　　处：《林业科学》1994年第1期44-49,共6页Scientia Silvae Sinicae

基　　金：新疆维吾尔自治区林业厅云杉雪霉病和雪枯病及其防治研究项目

摘　　要：采用同位素１４Ｃ示踪技术，研究初冬喷施多菌灵等防治云杉雪霉病和雪枯病，在雪盖条件下，药剂在云杉幼苗和土壤中的残留动态。结果表明，绝大部分药剂吸附在针叶表面，降解十分缓慢，１５０天时（相当融雪后期）残留量为喷药当天原始沉积量的４８．４％，高出病原菌的平均抑制中量５．２μｇ／ｇ；多菌灵在土壤中的移动性很小，全部剂量都集聚在０—１０ｃｍ表土层中，在０—２ｃｍ土层中，占总量的７２．５％，从而对田间试验筛选出的多菌灵，以及与其性能相近的甲基托布津、粉锈宁等杀菌剂的防治效果做出了准确的评价。The present paper deals with the residue dynamics of carbendazim in spruce seedling and soil using 14C-carbendazim to control thesnow blights and molds of spruce under simulated early winter and snow covered conditions.The rate of 14C-carbendazim used was 2g/m2.The results showed that almost all the 14C-carbendazim was absorbed on the surface of the needles and that the degradation was so slowly that 22.78μg/g residue was still on the needle surface after 150 days(just as late snow-melting period).89%14C-carbendazim gathered in the surface soil of 0-6cm depth.The residue on the needle surface greatly oversteps the EC50(5.2μg/g).The results proved the controlling effects of carbendazim,forinstance,Thiophanate methy 1,and Thiadimefon in the field tests.

关 键 词：多菌灵 残留 云杉 土壤 幼苗 

分 类 号：S767.11[农业科学—森林保护学]