| 保护地长期定位灌水方法土壤重金属研究 |
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| 引用本文： | 肖质秋,张玉龙,王芳.保护地长期定位灌水方法土壤重金属研究[J].北方园艺,2011(23):47-51. |
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| 作者姓名： | 肖质秋 张玉龙 王芳 |
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| 作者单位： | 沈阳农业大学土地与环境学院,辽宁省农业资源与环境重点实验室,辽宁沈阳110866 |
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| 基金项目： | 辽宁省农业科技攻关重大资助项目(2008212003);沈阳市科技攻关资助项目(1091108-3-02) |
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| 摘 要： | 试验研究了蔬菜保护地长期定位渗灌、沟灌、滴灌处理0～80 cm层次土壤Cu、Zn、Cd、Cr、Pb 5种金属元素有效态含量和全量的剖面分布特征,以同一试验区棚外露地大田土壤样本作为对照.结果表明:棚外露地大田与保护地棚内土壤重金属全量、有效态含量变化随土层加深而降低.棚内0～40 cm土层土壤重金属全量、有效态含量明显高于棚外土壤.棚内3种灌水处理0～40 cm土层土壤间重金属全量、有效态含量差异明显,Cd、Cr全量以沟灌处理含量最高,Pb、Zn全量以渗灌处理含量最高；而Cu、Cd、Cr、Pb的有效态含量均以沟灌处理最高、渗灌处理最低.土壤Cu、Zn、Cd、Cr、Pb有效态含量与其全量间呈正相关关系,重金属全量随着土壤有机质含量增加而增加、有效态含量随pH值降低而增加.灌溉和施肥影响土壤有机质含量及pH值变化,进而影响到土壤重金属全量及其有效态含量的高低.
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| 关 键 词： | 保护地 不同灌水方式 土壤重金属 |
Research on Soil Heavy Metals of Long-term Positioning Greenhouse under Different Irrigation Methods |
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| XIAO Zhi-qiu
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ZHANG Yu-long
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WANG Fang.Research on Soil Heavy Metals of Long-term Positioning Greenhouse under Different Irrigation Methods[J].Northern Horticulture,2011(23):47-51. |
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| Authors: | XIAO Zhi-qiu ZHANG Yu-long WANG Fang |
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| Institution: | (College of Land and Environment,Shenyang Agricultural University,Liaoning Key Laboratory of Agricultural Resource and Environment,Shenyang,Liaoning 110161) |
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| Abstract: | The objective of this study was to research the distribution of both the total contents and available contents of element Cu,Zn,Cd,Cr,Pb under three irrigation patterns(subsurface irrigation,drip irrigation and furrow irrigation)at the 0～80 cm soil profile.Soil samples were collected both inside and outside the greenhouse.The results showed that the total contents and available contents of soil heavy metals both inside and outside the greenhouse were increased with soil depth.The total contents and available contents inside the greenhouse were higher than the soil outside at 0～40 cm soil depth obviously.There were significant differences both the total contents and available contents within 3 irrigation patterns.In the total content aspects,the furrow irrigation had the highest contents of element Cd and Cr;subsurface irrigation had the highest contents of element Pb and Zn.In available contents of element Cu,Cd,Cr,Pb aspects,shown the furrow irrigation>drip irrigation>subsurface irrigation.The relationship between the total contents and available contents of soil Cu,Zn,Cd,Cr,Pb were positive correlation.The content of soil organic matter was conducive to improve the total contents of soil heavy metal.However,the increase of the pH value was conducive to decrease the available content of soil heavy metal.The factors affect the content of soil organic matter and pH values were irrigation and fertilizer which also affects the soil total contents and available contents. |
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| Keywords: | greenhouse irrigation patterns soil heavy metals |
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