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采用地理信息系统(GIS)技术和地统计学方法,研究了湖北省恩施市“清江源”现代烟草农业科技园区、恩施城郊和利川柏杨基地单元新整治区域的土壤属性和速效养分空间变异特征,并采用模糊数学法对其土壤肥力适宜性指数(SFI)进行评价.结果表明:土地整治对土壤速效磷含量的变异和空间分布的影响较大,这种影响程度可能与地形地貌特征和整治程度有关;土地整治对土壤pH值的影响较小,但是柏杨土壤酸化严重(pH<5.5).77.6%的城郊土壤具有较低的SFI,而柏杨和清江源分别仅有17.1%和31.4%的土壤具有较低的SFI.柏杨需要重点解决土壤酸化问题,城郊需要重点解决整个区域土壤培肥和肥力均衡化问题,而清江源则需解决SFI较低区域的培肥问题.
Using GIS and geostatistics methods, the soil properties and available nutrient space in the newly rehabilitated areas of Enshi City, Qingjiang River, Modern Tobacco Agricultural Science and Technology Park, Enshi Suburb and Icheon Park Young Base were studied. The results showed that the effect of land remediation on soil available phosphorus (P) content and spatial distribution was significant, which may be related to the topography and topography And the degree of remediation. Soil remediation had little effect on soil pH, but Poplar soil was acidified severely (pH <5.5) .77.6% of the suburban soils had lower SFI, while Bo Yang and Qingjiang River were only 17.1% And 31.4% of the total soils had low SFI, so Bo Yang needed to focus on soil acidification, suburbia needed to focus on soil fertility and fertility balance throughout the region, and Qingjiangyuan needed to address the issue of fertilization in the lower SFI.