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为了给施甸县烟区特色优质烟叶生产提供科学合理施肥方案,本文利用因子分析法和系统聚类分析法对施甸县植烟土壤养分进行了分析与综合评价。结果表明,土壤肥力最高的12个样本(占总样本的14.81%),综合得分F∈[0.623 6,1.261 3];土壤肥力较高的32个样本(占总样本的39.51%),综合得分F∈[0.008 4,0.503 0];土壤肥力较低的23个样本(占总样本的28.40%),综合得分F∈[-0.514 1,-0.051 8];土壤肥力最低的14个样本(占总样本的17.28%),综合得分F∈[-1.043 7,-0.565 3]。因此,鉴于全县植烟土壤肥力存在着较大差异,对土壤肥力较高的田地,要施用适量有机肥和复合肥;而土壤肥力处于较低水平的,则要足量、配合施用有机肥和复合肥。
In order to provide a scientific and rational fertilization program for producing high quality tobacco in Shidian County, this paper analyzed and comprehensively evaluated the nutrient contents of tobacco in Shidian County by means of factor analysis and cluster analysis. The results showed that the 12 samples with the highest soil fertility (14.81% of the total samples), the integrated score F ∈ [0.623 6,1.261 3], 32 soil samples with high soil fertility (39.51% of the total samples) F ∈ [0.008 4,0.503 0]; 23 samples with low soil fertility (28.40% of the total sample), the comprehensive score F ∈ [-0.514 1, -0.051 8]; the 14 samples with the lowest soil fertility 17.28% of the total sample), the comprehensive score F ∈ [-1.043 7, -0.565 3]. Therefore, in view of the great difference in soil fertility of tobacco in the whole county, proper organic fertilizer and compound fertilizer should be applied to the field with higher soil fertility; while the soil fertility is at a low level, sufficient amount should be used in combination with organic fertilizer And compound fertilizer.