中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 植烟土壤养分的空间变异特征及适宜性评价——以重庆市彭水县为例 西南大学学报(自然科学版) 2008,30 (1) 98-103
Position: Home > Articles > Spatial Variability of Soil Nutrients and Its Suitability Evaluation in Tobacco-Planted Area——A Case Study of Pengshui County in Chongqing Journal of Southwest University(Natural Science Edition) 2008,30 (1) 98-103

植烟土壤养分的空间变异特征及适宜性评价——以重庆市彭水县为例

作  者：
王子芳;高明;魏朝富;秦建成
单  位：
西南大学资源环境学院
关键词：
地统计学;空间异质性;分布格局;适宜性评价;彭水
摘  要：
采用域法对彭水县植烟土壤养分数据特异值进行处理,利用K-S检验数据的分布特征,并采用半方差、克立格插值法研究了植烟区土壤肥力的空间变异特征.从变异系数看,土壤速效磷最大为71.60%,而pH最小,仅为12.57%;土壤肥力养分样本数据最佳拟合模型为指数模型;土壤养分在空间上有一定的自相关性,并受各向异性的影响,自相关阈值变幅表现为pH>有机质>有效磷>有效氮>CEC>速效钾;土壤养分的随机变异表现为pH>有效磷>有效氮>有机质>CEC>速效钾,CEC、速效钾具有中等空间相关性,其他肥力要素为空间弱相关性;彭水县植烟土壤酸碱度、有效氮、有效磷含量比较适宜植烟,阳离子交换量、有机质含量对烤烟生产的适应性好,土壤速效钾非常适宜于植烟.因此,通过对空间分布格局图的实地分析,可以从宏观上把握影响土壤养分空间变异的因素,从而做出科学的作物的适宜性评价.
译  名：
Spatial Variability of Soil Nutrients and Its Suitability Evaluation in Tobacco-Planted Area——A Case Study of Pengshui County in Chongqing
作  者：
WANG Zi-fang,GAO Ming,WEI Chao-fu,QIN Jian-chengSchool of Resources and Environment,Southwest University,Chongqing 400716,China
关键词：
geo-statistics;spatial variability;pattern;distribution suitability evaluation;Pengshui county
摘  要：
A case study of soil nutrients in tobacco-planted area was conducted in Pengshui County of Chongqing.Unusual values in soil nutrient data were removed with the outlier method,the distribution of soil nutrient data was verified by K-S method,and the spatial variability of soil nutrients in tobacco-planted area was analyzed with Kriging method.Coefficient of variation was the greatest for available P(71.60%) and the smallest for soil pH(12.57%).The exponential model appeared to be the optimal simulation model for the data of soil nutrient samples.Soil nutrients showed a certain self-correlation in their spatial distribution and were influenced by anisotropy.The ranges of their threshold values appeared in the sequence of pH>OM> available P>available N>CEC> readily available K.The spatial variability of soil nutrients was described by an exponential model and the random variance indexes of soil nutrients were in the sequence of pH > available P > available N >OM > CEC > readily available K.The indexes of CEC and readily available K were characterized by a moderate spatial variability.The pH,available N,and available P in Pengshui were suitable and CEC,OM,and readily available K were highly suitable for tobacco planting.Therefore,we could master the macroscopic factors affecting the spatial variability of soil nutrients and make reasonable evaluation by the fieldwork of their distribution patterns.

相似文章

导出引用
计量
文章访问数: 11
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46