基于甘肃省天水市麦积区经济林氮磷钾元素调查数据、区划图、经济林分布图等数据，利用3S 技术、克里金插值法、重分类和栅格计算方法，对该区域经济林种植土壤氮磷钾元素进行空间分析研究。结果显示：适宜苹果种植的土壤氮磷钾主要分布在研究区西部和中部区域，西北部分区域其值偏高，东南部地区其值偏低；适宜花椒种植的土壤氮磷钾主要分布在研究区中部和东部边缘，西部区域其值偏高，南部地区其值偏低；适宜葡萄种植的土壤氮磷钾主要分布在研究区中南部地区和西部区域，西部小片区域其值偏高，东部及南部地区其值偏低。麦积区经济林种植土壤氮磷钾施肥没有统一标准，土壤中氮、磷、钾等土壤肥力分布不均衡，应尽快因地制宜的对麦积区经济林栽培进行科学管理和标准规划。%Economic forest planting has become a pillar industry of Maiji district,Tianshui City,Gansu Province.The spatial analysis of soil N,P,K can provide decision imformation on the efficient use of soil fertility and spatial regions for economic forest planting in Maij i District.Based on the surveyed results data of Maiji District,zoning maps,forest maps and other data,combined with the 3S technology,Kriging,re-classification and raster calculation method,the soil N,P,K factors of economic forest planting in this dis-trict were analyzed.The results showed the suitable soil N,P,K for apple cultivation was mainly distribu-ted in north and central region,which was higher in northwest region and lower in southeastern region.The suitable soil N,P,K for pepper planting was mainly distributed in central and eastern edge,which was higher in western region while lower in southern region.The suitable soil N,P,K for grape growing was mainly distributed in south-central and western small area,which was higher in a small part of north while lower in eastern and southern regions.The nitrogen,phosphorus,potassium and other soil fertility distribu-ted uneven,this indicated that the there was not a uniform standard for fertilization,thus,scientific manage-ment and planning standards for economic forest planting should be carried immediately.
展开▼
