不同肥力土壤
Soils with different fertility
土壤肥力特征
soil fertility properties
土壤肥力限制因素
Limiting factors of soil fertility
土壤肥力指标
Soil fertility index
Soil fertility indicators
土壤肥力质量
soil fertility quality
soil fertility quality assessment
土壤肥力质量指标
soil fertility quality indicator
土壤生物肥力
soil biological fertility
土壤生物学肥力
soil biological fertility