| 新疆石河子地区棉田地膜残留的时空分布特征 |
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| 引用本文： | 董合干,王栋,王迎涛,童静,刘彤.新疆石河子地区棉田地膜残留的时空分布特征[J].干旱区资源与环境,2013(9):182-186. |
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| 作者姓名： | 董合干 王栋 王迎涛 童静 刘彤 |
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| 作者单位： | 石河子大学生命科学学院 |
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| 基金项目： | 石河子大学国家大学生创新创业训练计划项目(111075910);国家“十一五”科技支撑计划重点项目(2007BAC17B03)资助 |
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| 摘 要： | 为了研究新疆棉田地膜残留的时空分布特征,在新疆短绒棉主要生产地区石河子,选择3个团场的连续覆膜1年、5年、10年、15年、20年、25年的棉田进行取样,测量其单位面积残膜数量、密度,残膜面积变化特征,预测未来棉田残膜的变化趋势。结果表明:随着覆膜年数的增加,单位面积片数和重量每年以40.02万片.hm-2、13.66 kg·hm-2的线性趋势递增。在土壤深度的空间分布上,连续覆膜5年后残膜大小、密度在0～40cm土壤中将均匀分布。连续覆膜10年,土壤中三种面积类型残膜之间(0～25cm2,25～100cm2和大于100cm2)在单位重量上将不再有差异。随着覆膜年数的增加,对作物产生危害的残膜类型(大于25cm2)一直占总残膜质量的60%以上。
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| 关 键 词： | 地膜残留 棉田 分布特征 新疆 |
Spatial and temporal distribution characteristics of mulch residues in cotton field in Shihezi,Xinjiang |
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| DONG Hegan,WANG Dong,WANG Yingtao,TONG Jing,LIU Tong.Spatial and temporal distribution characteristics of mulch residues in cotton field in Shihezi,Xinjiang[J].Journal of Arid Land Resources and Environment,2013(9):182-186. |
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| Authors: | DONG Hegan WANG Dong WANG Yingtao TONG Jing LIU Tong |
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| Institution: | (College of Life Science,Shihezi University,Shihezi 832000,P.R.China) |
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| Abstract: | To study the spatial and temporal distribution characteristics of mulch residues in cotton field,three mission field in the main production areas of short staple cotton in Xinjiang Shihezi were selected to sample in cotton fields(continuous mulching 1 year,5 years,10 years,15 years,20 years,25 years).We measured plastic residue number,density and plastic film areas and predicted the future trend of the residue mulch in cotton fields.Results showed the number and weight of plastic residues increased by 40.02 ten thousand·hm-2 and 13.66 kg·hm-2 per year with the annual increase of mulching.On the spatial distribution,after 5 years of continuous mulching,residue mulch's size and density will be evenly distributed in soil(0-40cm).After 10 years of continuous mulching,three area types of mulch residue(0-25cm2,25-100cm2 and >100cm2) will be no difference in unit weight.The harmful mulch residue type(>25cm2) always accounts more than 60% with the mulching annual increase. |
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| Keywords: | Xinjiang cotton fields mulch residue distribution characteristics |
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