土壤质量分级
soil quality classification
土壤质量含水量
Water mass content in soil
土壤质量及其评价指标
Soil quality and its assessnent indicators
土壤质量评价
Soil quality evaluation
Evaluation of soil quality
Soil quality assessment
Paddy soil quality assessment
土壤质量评价指标
Assessment indicators of soil quality
soil quality indicators
土壤质量生物指标
Bio-indicator of soil quality
土壤质量退化
soil quality deterioration
土壤质量退化指数
soil quality degradation index
土壤质量系统评价模型
Systematic assessment model of soil quality
土壤质量演变评价
soil quality evolution evaluation