期刊论文

Migration of Atrazine Residue in Hedgerow System on Sloping Croplands

中文

水土保持学报

1009-2242

2018

32

5

47-52

10.13870/j.cnki.stbcxb.2018.05.008

国家“十二五”科技支撑计划项目（2012BAD14B02）； 国家重点研发计划项目（2016YFC0501704-4）； 湖南省自然科学基金面上项目（2016JJ2174）；

本校为第一机构

为探索坡耕地中等高草篙对土壤阿特拉津残留迁移的影响,采用模拟降雨试验,研究华北地区不同坡度(15％和20％)条件下草篱系统中土壤阿特拉津残留迁移分布特征.结果表明:降雨后,土壤阿特拉津残留纵向迁移占主导地位.草篱处理篱带区阿特拉津残留量远低于无草篱对照的对应区域,篱带区各土层阿特拉津残留量相近,而无草篱对照残留量随土层深度增加而降低,且表层(0-10 cm)显著高于其他层.草篱系统中不同篱域土壤阿特拉津残留量差异显著,篱带区＜沉降区＜作物区.最优尺度回归分析结果表明,草篱系统中各因素对土壤阿特拉津残留量影响程度从大到小依次为草篱＞土层深度＞土壤含水量＞篱域＞坡度＞坡位,草篱...

For exploring the effects of contour hedgerows on the migration of atrazine residues in soil,the features of migration and distribution of atrazine residue those were influenced by hedgerow system under different slope gradients(15%and 20%)were studied by simulated rainfall experiment.The results showed that the vertical migration of soil atrazine remained dominant after rainfall.Grass hedges significantly reduced atrazine residues compared with the control.The residual levels of atrazine did not differ among 3 soil depths inside the grass hedg...