土壤EC值方法标准
土壤中分解尿素的细菌的分离和计数
土壤氮素转化
尿素的化学性质及在土壤中的转化
Effects of urea fertigation of apple trees on soil pH, exchangeable cations and extractable manganese in a sandy loam soil in New Zealand
the biology of soil compaction
Soil Nitrogen and Sulfur
Soil Nitrogen and Sulfur
Contribution of Bacteria to Initial Input and Cycling of Nitrogen in Soils
土壤养分等级分级标准