NO3- --N contents at 1 m soil depth
Soil depth
土层深度
垂直侵蚀产沙
土壤深度
土壤剖面
土壤厚度
土层厚度
bare soil and soil with crop
composite soil nailing soil nailing and micro-pile
Coulomb soil-pressure of part soil
Coupled transport of soil water and soil heat
improving soil and enriching soil fortility
lime-soil compaction soil
movement of soil water and soil salt
moving soil and improving soil fertility