Effective cover rate for soil and water conservation
effect of soil and water conservation
economics of soil and water conservation
ecology oriented water conservancy
Ecological Water Conservancy
ecological forest for water and soil conservation
ecological construction of soil and water conservation
eco-agriculture with soil and water conservation
Eco-agriculture based on soil and water conservation
dynamically monitoring soil and water conservation
discipline of soil and water conservation
Digital water conservancy
Development of Water Conservancy
designated soil and water conservation area