Principal component analysis was used to derive soil fertility variation factors.
运用主成分分析选取土壤肥力变异因子。
Soil fertility could be evaluated objectively by principal component analysis.
土壤主成分分析能较为客观地评价土壤肥力水平。
Soil fertility could be evaluated objectively by principal component analysis.
土壤主成分分析能较为客观地评价土壤肥力水平。
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