| 山西省主要农田土壤有机质和全氮的空间变异分析 |
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| 引用本文： | 解文艳,周怀平,关春林,张建杰,杨振兴,颜晓元,王书伟.山西省主要农田土壤有机质和全氮的空间变异分析[J].山西农业科学,2012,40(5):493-497. |
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| 作者姓名： | 解文艳 周怀平 关春林 张建杰 杨振兴 颜晓元 王书伟 |
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| 作者单位： | 1. 山西省农业科学院农业环境与资源研究所,山西太原,030006
2. 土壤与农业可持续发展国家重点实验室,中国科学院南京土壤研究所,南京210008 |
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| 基金项目： | 山西省青年科技研究基金，中国科学院知识创新项目 |
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| 摘 要： | 探明土壤有机质和全氮的空间分布,是进行合理科学配方施肥的重要依据。利用山西全省采集的75个典型农田剖面数据,测定其0～20,20～100 cm土层土壤有机质和全氮的含量。研究结果表明,2007年山西省主要农田耕层0～20 cm土层土壤有机质和全氮的平均含量分别为17.7,0.85 g/kg,均属中等偏上水平,变异系数为中等程度变异;20～100 cm土层土壤有机质和全氮的平均含量分别为8.5,0.45 g/kg。其剖面分布表现出一定的表聚性。山西省农田土壤有机质和全氮含量空间分布格局基本一致,由东南向西北逐渐减少,主要受地形、土壤类型、土地利用方式和施肥状况等因素的影响。
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| 关 键 词： | 有机质 全氮 空间变异 农田 山西省 |
Spatial Variance of Soil Organic Matter and Total Nitrogen in Shanxi Farmland |
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| XIE Wen-yan
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ZHOU Huai-ping
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GUAN Chun-lin
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ZHANG Jian-jie
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YANG Zhen-xing
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YAN Xiao-yuan
,
WANG Shu-wei.Spatial Variance of Soil Organic Matter and Total Nitrogen in Shanxi Farmland[J].Journal of Shanxi Agricultural Sciences,2012,40(5):493-497. |
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| Authors: | XIE Wen-yan ZHOU Huai-ping GUAN Chun-lin ZHANG Jian-jie YANG Zhen-xing YAN Xiao-yuan WANG Shu-wei |
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| Institution: | 1.Institute of Agricultural Environment & Resources,Shanxi Academy of Agricultural Sciences,Taiyuan 030006, China;2.State Key Laboratory of Soil & Sustainable Agriculture,Nanjing Institute of Soil Science, Chinese Academy of Science,Nanjing 210008,China) |
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| Abstract: | 75 soil samples were collected from farmland in Shanxi and concentrations of soil organic matter(SOM) and total nitrogen(TN) at 0～20 cm and 20～100 cm soil depths were analyzed.The statistical results indicated that the mean content of SOM and TN at 0～20 cm soil depths of typical cropland were 17.7,0.85 g/kg.The mean leveles of SOM and TN were higher in topsoil(0～20 cm) and their coefficients of variation belonged to the middle degree.The mean contents of SOM and TN 20～100 cm soil depths were 8.5 and 0.45 g/kg respectively.SOM and TN levels showed the same distributed patterns of declining from southeast to northwest.Their spatial distribution was affected by topology,soil type,fertilization and land use types. |
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| Keywords: | soil organic matter total nitrogen spatial variability farmland Shanxi province |
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