论文部分内容阅读
运用系统聚类分析法,对敦煌市的2 188个耕地土样进行了养分特性分析。结果表明,敦煌市耕地土壤养分可分为3个类型区,第一类型区为棉果种植区,土壤养分含量相对较高,属高肥力土壤类型;第二类型区为无核白葡萄种植区,土壤养分含量为最低,属低肥力土壤类型;第三类型区为棉菜果种植区,土壤养分含量为中等,属中等肥力土壤类型。其中第一类型区是敦煌市耕地的主要土壤养分类型。所划分的养分类型反映了研究区土壤的养分特征。
Using the method of cluster analysis, the nutrient characteristics of 2 188 cultivated arable soils in Dunhuang City were analyzed. The results showed that the soil nutrients in Dunhuang City can be divided into three types of area, the first type of area is cotton planting area, the soil nutrient content is relatively high, is a high fertility soil type; the second type area is seedless white grape growing area , Soil nutrient content is the lowest, is a low-fertility soil type; the third type area is a cottonseed growing area, the soil nutrient content is medium, is a moderate soil fertility type. The first type of area is the main soil nutrient type of cultivated land in Dunhuang City. The types of nutrients classified reflect the nutrient characteristics of soil in the study area.