circulation of nutrients of soil-crop system
evaluation of status of pollution
Nutrient status of soil
present status of soil erosion
status of soil fertility
status of soil moisture
status of soil nutrient
the status of soil phosphorus
Surplus- deficit status of soil water storage capacity
Change of soil nutrients
content of soil nutrients
Dynamic of soil nutrients
dynamics of soil nutrients
regulation of soil nutrients loss
Variation of soil nutrients
varability of soil nutrients
advantage status of railway