华南农业大学学报2017，Vol.38Issue(4)：37-40,4.DOI:10.7671/j.issn.1001-411X.2017.04.006
印楝素在甘蓝及土壤中的消解动态
Degradation dynamics of azadirachtin in cabbage and soil
摘要
Abstract
[Objective] To identify the residual and degradation dynamics of azadirachtin in cabbage and soil after spraying 0.3%azadirachtin emulsifiable concentrate during the growth period of cabbage (Brassica oleracea).[Method]Azadirachtin was added with three concentrations of 0.1,0.5 and 1.0 mg·kg-1 within the range from 0.05 to 5.00 mg·kg-1.Azadirachtin was extracted from cabbage and soil using acetonitrile assisted with ultrasonic, purificated using a florisil solid phase extraction column, detected by HPLC and quantified by external standard method.[Result]The average recovery rates of azadirachtin in cabbage ranged from 88.52% to 93.21% with relative standard deviations ranging from 2.75% to 3.55%, and the average recovery rates in soil were ranged from 90.69% to 93.32% with relative standard deviations ranging from 2.09% to 3.46%.The half-lives of azadirachtin in cabbage and soil were 0.89 and 2.40 d respectively.[Conclusion]Azadirachtin is an easily degradable pesticide.Application of 0.3% azadirachtine mulsifiable concentrate is safe and recommended.关键词
印楝素/乳油/甘蓝/土壤/农药残留/高效液相色谱Key words
azadirachtin/emulsifiable concentrate/cabbage/soil/pesticide residue/HPLC分类
农业科技引用本文复制引用
杨晓云,黄其亮,江腾辉,徐汉虹..印楝素在甘蓝及土壤中的消解动态[J].华南农业大学学报,2017,38(4):37-40,4.基金项目
国家自然科学基金(20377015) （20377015）
