【作者】 黄家章； 刘新刚； 董丰收； 郑永权； 王艳艳； 姚建仁；

【Author】 HUANG Jia-zhang 1,2 ,LIU Xin-gang 1 ,DONG Feng-shou 1 ,ZHENG Yong-quan 1 ,WANG Yan-yan 3 ,YAO Jian-ren 1 (1.Key Laboratory of Pesticide Chemistry and Application,Ministry of Agriculture,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China; 2.China Agricultural Science and Technology Press,Beijing 100081,China; 3. Beijing New Century Certification Co.,Ltd,Beijing 100035,China)

【机构】 农业部农药化学与应用重点开放实验室中国农业科学院植物保护研究所； 中国农业科学技术出版社； 北京新世纪认证有限公司；

【摘要】 本文采用物理模拟人工降雨的方法初步研究了淹水条件下氟虫腈在江西红壤和嘉兴水稻土的淋溶行为,农药添加量为最高推荐用量的倍量,降雨量为180mm·d-1。结果表明,经过7d模拟人工降雨后,在嘉兴土中,95%的农药仍驻留在0～15cm的土壤中,驻留量随深度增加而减少,尤其在10cm以下驻留量很小;江西土中,经过7d淋溶,有近50%的农药穿过了淋溶柱,其最大淋溶深度还有待进一步研究。因此,在嘉兴水稻土中施用氟虫腈,对地下水的影响较小;在江西红壤中施用氟虫腈,将会对地下水产生潜在威胁。更多还原

【Abstract】 Leaching behaviors of fipronil in Jiaxing paddy soil and Jiangxi red soil were studied in the continuous flooding situation using physical simulating artificial rainfall method. The amount of fipronil added was twice of the maximum dosage recommended and the rainfall volume was 180 mm·d -1. The results showed that the added fipronil was mostly distributed in 0～15 cm layer in Jiaxing paddy soil column after 7 days’ continuous leaching and reduced with the deepness adding. However,about 50 percent of added fipronil was leached through column in Jiaxing red soil,and the maximum leaching deepness was still waiting for being further studied. Thus,it can be concluded that the influence of fipronil on groundwater was small relatively when used in Jiaxing paddy soil,but there was potential risk on groundwater when used in Jiangxi red soil.更多还原