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对棉地评价中基于作物产量指标和对土地属性作聚类分析的立地分类进行比较研究 .结果表明 ,从作物产量指标分析中可得出三个等级 :适宜级 (产量 >90 0 kg/ hm2 ) ,适宜级 (产量 50 0 - 90 0kg/ hm2 ) ,适宜级 (产量 <50 0 kg/ hm2 ) .而聚类分析中通过对 86个样本进行统计计算也得出三个等级 .两种分类方法的基本结论没有太大分歧 ,但通过聚类分析得出的立地分类与基于作物产量指标的立地分类并不完全一致 .研究结果也清楚地表明 ,经过适当的修正 ,作物产量指标分析法可以被可靠地运用于棉地评价的立地分类中
A comparative study on site classification based on crop yield indicators and cluster analysis of land attributes was conducted in the cotton field evaluation.The results showed that three levels could be obtained from the analysis of crop yield indicators: suitable level (yield> 90 0 kg / hm2 ), Suitable level (50 0 - 90 0 kg / hm2) and suitable level (yield <50 0 kg / hm2), while in the cluster analysis, there are also three levels by statistical calculation of 86 samples The basic conclusions of the method are not much different, but the site classification obtained by cluster analysis is not completely consistent with the site classification based on crop yield indicators. The results of the study also clearly show that with appropriate amendments, crop yield index analysis can It is used reliably in the site classification of the cotton field evaluation