海南农田土壤有效硒含量与分级及其影响因素
采集海南主要乡镇面积较大的水田、果园等土壤，对耕作层土壤样品和土壤剖面样品进行有效硒含量测定，研究海南省各市（县）区域农田表层土壤中硒含量、空间分布特征及影响因素。结果表明：表层土壤有效硒含量在0．9～84．8斗g／kg之间，平均值为21．717μg／kg，集中在全国高水平8～20μg／kg内的占全岛土壤总面积的76．38％；全硒含量平均值为0．355mg／kg，73％属于全国中高等水平（〉0．175mg／kg）；52．03％的土壤样品有机质处于中等偏下水平；pH值集中分布在5．0～5．5之间，占全省总面积的69．19％，强酸性（pH4．5～5．0）样点占39．62％；海南农田土壤硒含量与土壤...
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| Published in | 广东农业科学 Vol. 43; no. 3; pp. 88 - 92 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
海南省农科院农业环境与土壤研究所/农业部海南耕地保育科学观测试验站,海南 海口,571100
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-874X |
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| Abstract | 采集海南主要乡镇面积较大的水田、果园等土壤，对耕作层土壤样品和土壤剖面样品进行有效硒含量测定，研究海南省各市（县）区域农田表层土壤中硒含量、空间分布特征及影响因素。结果表明：表层土壤有效硒含量在0．9～84．8斗g／kg之间，平均值为21．717μg／kg，集中在全国高水平8～20μg／kg内的占全岛土壤总面积的76．38％；全硒含量平均值为0．355mg／kg，73％属于全国中高等水平（〉0．175mg／kg）；52．03％的土壤样品有机质处于中等偏下水平；pH值集中分布在5．0～5．5之间，占全省总面积的69．19％，强酸性（pH4．5～5．0）样点占39．62％；海南农田土壤硒含量与土壤pH指呈负相关，与全硒、有机质含量成正相关。海南农田土壤硒含量高、活性强、分布广，在一定范围内增加土壤有机质含量、减小土壤酸碱度，有助于提高土壤硒的有效性。 |
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| AbstractList | S151.9+3; 采集海南主要乡镇面积较大的水田、果园等土壤,对耕作层土壤样品和土壤剖面样品进行有效硒含量测定,研究海南省各市(县)区域农田表层土壤中硒含量、空间分布特征及影响因素.结果表明:表层土壤有效硒含量在0.9～ 84.8μg/kg之间,平均值为21.717μg/kg,集中在全国高水平8～20 μg/kg内的占全岛土壤总面积的76.38％;全硒含量平均值为0.355 mg/kg,73％属于全国中高等水平(＞0.175 mg/kg);52.03％的土壤样品有机质处于中等偏下水平;pH值集中分布在5.0～ 5.5之间,占全省总面积的69.19％,强酸性(pH4.5～5.0)样点占39.62％;海南农田土壤硒含量与土壤pH指呈负相关,与全硒、有机质含量成正相关.海南农田土壤硒含量高、活性强、分布广,在一定范围内增加土壤有机质含量、减小土壤酸碱度,有助于提高土壤硒的有效性. 采集海南主要乡镇面积较大的水田、果园等土壤，对耕作层土壤样品和土壤剖面样品进行有效硒含量测定，研究海南省各市（县）区域农田表层土壤中硒含量、空间分布特征及影响因素。结果表明：表层土壤有效硒含量在0．9～84．8斗g／kg之间，平均值为21．717μg／kg，集中在全国高水平8～20μg／kg内的占全岛土壤总面积的76．38％；全硒含量平均值为0．355mg／kg，73％属于全国中高等水平（〉0．175mg／kg）；52．03％的土壤样品有机质处于中等偏下水平；pH值集中分布在5．0～5．5之间，占全省总面积的69．19％，强酸性（pH4．5～5．0）样点占39．62％；海南农田土壤硒含量与土壤pH指呈负相关，与全硒、有机质含量成正相关。海南农田土壤硒含量高、活性强、分布广，在一定范围内增加土壤有机质含量、减小土壤酸碱度，有助于提高土壤硒的有效性。 |
| Author | 吉清妹 潘孝忠 张冬明 符传良 谢良商 |
| AuthorAffiliation | 海南省农科院农业环境与土壤研究所/农业部海南耕地保育科学观测试验站,海南海口571100 |
| AuthorAffiliation_xml | – name: 海南省农科院农业环境与土壤研究所/农业部海南耕地保育科学观测试验站,海南 海口,571100 |
| Author_FL | JI Qing-mei ZHANG Dong-ming FU Chuan-liang XIE Liang-shang PAN Xiao-zhong |
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| ClassificationCodes | S151.9+3 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DocumentTitleAlternate | Content, distribution classification of available selenium in Hainan farmlands and its influence factors |
| DocumentTitle_FL | Content, distribution classification of available selenium in Hainan farmlands and its influence factors |
| EndPage | 92 |
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| Keywords | 农田土壤 有效硒 海南 分布 影响因素 |
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| Notes | Soil from the paddy fields and orchards located in Hainan were collected, then the samples of tillage level and their profile were analyzed, selenium contents, were detected to study the distinction and effect factors among every counties in Hainan. The results showed that; surface soil＇ s available selenium content ranged from 0.9 to 84.8 g/kg, with average of 21.717 μg/kg. The high level （ 8 to 20 μg/kg ）densely took 76.38% of the total area. The total selenium content averaged at 0.355 mg/kg, 73% of it concentrated in national medium-high level. 52.03% of the organic matter from the samples were below the average value, pH 5.0-5.5 was the capital part which took 69.19% from the sum, in which high-acid （ pH 4.5-5.0 ） took 39.62%. In Hainan＇ s soil, the selenium content had negative correlation with pH level, whereas, had positive one with total content and organic matter. The selenium in Hainan farmlands was wide in distribution and high in activity. In a certain, we could enhance the availability of soil s |
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| PublicationTitle | 广东农业科学 |
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| PublicationYear | 2016 |
| Publisher | 海南省农科院农业环境与土壤研究所/农业部海南耕地保育科学观测试验站,海南 海口,571100 |
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| Snippet | ... S151.9+3; 采集海南主要乡镇面积较大的水田、果园等土壤,对耕作层土壤样品和土壤剖面样品进行有效硒含量测定,研究海南省各市(县)区域农田表层土壤中硒含量、空间分布特征及影响因素.结果表明:表层土壤有效硒含量在0.9～ 84.8μg/kg之间,平均值为21.717μg/kg,集中在全国高水平8～20... |
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| SubjectTerms | 农田土壤 分布 影响因素 有效硒 海南 |
| Title | 海南农田土壤有效硒含量与分级及其影响因素 |
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