文山市不同生态区土壤养分的时空异质性及适宜性

发布时间：2018-04-12 16:35

本文选题：文山市 + 土壤养分　；参考：《中国烟草科学》2016年06期

【摘要】：为了明确文山市不同生态区土壤养分空间异质性及适宜性,给烤烟种植区划及养分调控提供参考依据,采用描述性统计分析、聚类分析、主成分分析和模糊数学隶属函数方法对2011—2015年文山市4个生态区1100份土壤样品进行了分析。结果表明,文山市不同生态区土壤pH,有机质、速效氮、速效磷、速效钾含量具有明显的时间异质性,速效氮和速效钾含量偏低,有机质和速效磷含量相对丰富。pH中强度变异,有机质、速效氮、速效磷、速效钾含量强变异,具有较强的空间异质性,可聚为3类。平均土壤适宜性指数(SFI为0.50)偏低。结果说明,文山市4个生态区植烟土壤主要养分均质性和适宜性较低,整体以西南陡坡区土壤适宜性相对较好。
[Abstract]:In order to clarify the spatial heterogeneity and suitability of soil nutrients in different ecological areas of Wenshan City, and to provide a reference basis for the regionalization and nutrient regulation of flue-cured tobacco, descriptive statistical analysis and cluster analysis were used.Principal component analysis (PCA) and fuzzy mathematical membership function method were used to analyze 1100 soil samples from four ecological regions of Wenshan City from 2011 to 2015.The results showed that the soil pH, organic matter, available nitrogen, available phosphorus and available potassium contents in different ecological areas of Wenshan City had obvious temporal heterogeneity, the available nitrogen and available potassium contents were low, and the organic matter and available phosphorus contents were relatively rich.The contents of organic matter, available nitrogen, available phosphorus and available potassium are highly variable and have strong spatial heterogeneity, which can be divided into three categories.The average soil suitability index (SFI) was 0.50).The results showed that the main nutrient homogeneity and suitability of tobacco planting soil in four ecological regions of Wenshan City were lower than those in southwest steep slope region.
【作者单位】：广西中烟工业有限责任公司;云南瑞升烟草技术(集团)有限公司;云南省烟草公司文山州公司;
【基金】：广西中烟工业有限责任公司科技项目“提升‘真龙’品牌文山烟叶质量的生产关键技术研究”(GXZYCX2016B019)
【分类号】：S572;S158

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