期刊论文

中文

农药

1006-0413

2010

49

8

590-592

10.16820/j.cnki.1006-0413.2010.08.015

本校为第一机构

研究了25%己唑醇.三环唑悬浮剂在水稻稻杆、谷壳、糙米中的残留及消解动态。己唑醇和三环唑的最小检出量分别为2.5×10-11、5.0×10-10g,在水稻稻杆、谷壳和糙米中的最低检出质量分数均为6.25×10-3mg/kg。长沙和杭州两地残留消解动态实验结果表明:己唑醇在稻杆中的半衰期分别为7.44、7.07 d;三环唑在稻杆中的半衰期分别为7.67、7.70 d。最终残留实验表明:25%己唑醇.三环唑悬浮剂按推荐剂量1 500 g/hm2,分别施药2次和3次,在距最后1次施药后的第21天或水稻收获,此时收获的糙米中己唑醇和三环唑的残留量均未超过MRL值,该药按推荐剂量使用是安全的。

The residue and degradation dynamic of hexaconazole·tricyclazole 25% SC in rice plant,rice hull,rice was studied.The minimum detectable amount of hexaconazole and tricyclazole was 2.5×10-11 and 5.0×10-10 g,and the minimum detectable concentration of hexaconazole and tricyclazole in rice plant （stem,hull and rice） was 6.25×10-3 mg/kg.The results from field experiment of degradation dynamic in Changsha and Hangzhou indicated that the half-life of hexaconazole in rice plant was 7.44,7.07 d and the half-life of tricyclazole in rice plant was ...