整治区植烟土壤有机质空间变异特征及肥力等级评价  

Spatial Variability of Organic Matter and Fertility Evaluation of Soil in Tobacco Fields of Land Restoration Area

作　　者：徐大兵[1] 刘冬碧[1] 佀国涵[1] 赵书军[1] 袁家富[1] 上官力[2] 谭军[2] 

机构地区：[1]湖北省农业科学院植保土肥研究所,武汉430064 [2]湖北省烟草公司恩施州公司,湖北恩施445000

出　　处：《湖北农业科学》2013年第19期4601-4604,4607,共5页Hubei Agricultural Sciences

基　　金：湖北省烟草公司科技项目(027Y2012-089)

摘　　要：以恩施州清江源现代烟草农业科技园（以下简称清江源）、恩施市城郊现代烟草农业基地单元（以下简称城郊）和利川市柏杨现代烟草农业基地单元（以下简称柏杨）整治区域土壤为例,采用地理信息系统（GIS）技术和地统计学方法,研究了土壤有机质的空间变异特征,并进行了肥力等级评价.结果表明,清江源、城郊和柏杨整治区域土壤有机质平均含量分别为（15.70±4.42） g/kg、（9.98±3.32） g/kg和（14.00±2.64） g/kg,城郊不同田块土壤有机质含量之间存在较大差异,空间分布不均一,而清江源和柏杨则差异较小.与清江源和柏杨相比,城郊土壤取样数量不能满足在95％置信水平和5％相对误差条件下的空间变异性研究,其土壤有机质含量的半方差理论变异函数拟合性最好,且F检验达到极显著水平,城郊土壤有机质含量偏低等级（10～20g/kg）所占的比例分别比清江源和柏杨减少了33.8％和46.3％,而低等级（6～10g/kg）所占比例分别比清江源和柏杨增加了2.65倍和2.30倍.Geographic information system （GIS） technology and geostatistics methods were adopted to study the spatial variations of soil organic matter and its grade evaluation in Qingjiangyuan,Chengjiao and Boyang tobacco soil of Enshi city.The results were as follows：the organic matter contents of Qingjiangyuan,Chengjiao and Boyang tobacco soils were （15.70±4A2） g/kg,（9.98±3.32） g/kg,（14.00±2.64）g/kg.There were larger differences among different areas in Chengjiao,and their spatial distribution was not relatively uniform.Compared with Qingjiangyuan and Boyang,the sample numbers of Chengjiao could not meet the spatial variation study in the 95％ degree of confidence and 5％ permissible error conditions.The semivariance theory variogram and the experimental variogram of Chengjiao were fitted best,and the homogeneity of variancec （F test） reached a significant level.Compared with the organic matter contents of Qingjiangyuan and Boyang,the lower degree （10～20g/kg） of Chengjiao decreased by 33.8％ and 46.3％,and the low degree （6～10 g/kg） of Chengjiao increased by 2.65 times and 2.30 times respectively.

关 键 词：植烟土壤 有机质 变异系数 空间变异性 肥力等级评价 

分 类 号：S572[农业科学—烟草工业] S153.621[农业科学—作物学]