西玛津在茶叶及土壤中的残留与安全性评价
Residue and Safety Evaluation of Simazine in Tea and Soil
宋国春 1李瑞娟 1刘同金 1杨万海 2岳凤荣 1张君亭 1于建垒1
作者信息
- 1. 山东省农业科学院 植物保护研究所/山东省植物病毒学重点实验室,山东 济南 250100
- 2. 山东省植物保护总站,山东 济南 250100
- 折叠
摘要
为茶叶上安全使用西玛津及制定其最大残留限量(MRL)国家标准提供科学依据,通过田间试验和室内检测,研究西玛津在茶园土壤中的残留消解动态及在茶叶和土壤中的残留特性与安全风险.结果表明:西玛津在土壤中的半衰期为8.7～～9.7 d,药后30 d消解89％以上.地面喷雾50％西玛津可湿性粉剂1 875 9 a.i./hm2和2 812.5 9 a.i./hm2,施药7d后收获的茶叶中西玛津残留量均低于0.05 mg/kg(MRL).西玛津在茶叶上的安全间隔期为7d.
Abstract
To provide a scientific basis for the safe use and formulation of standards of maximum residue limits for simazine in tea,a field experiment and laboratory testing were conducted to reveal residual degradation dynamics of simazine in soil and the final residues and security risk of simazine in tea and soil.Results:The half-life of simazine in soil were 8.7～9.7 d,residue degradation rate in soil 30 d after application was above 89％.When the soil in tea field was sprayed with 1 875 g a.i./hm2 and 2 812.5 g a.i./hm2 simazine 50％ WP,the application was done 7 d before harvesting,the residue of simazine in the harvested tea was lower than 0.05 mg/kg (MRL).It demonstrated that the preharvest interval of simazine on tea was 7 d.
关键词
西玛津/茶叶/土壤/残留/安全性Key words
simazine/tea/soil/residue/safety引用本文复制引用
基金项目
农业行业标准制定和修订项目(农财发2015 49)
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据