adjusting the crops structure
surface soil hardened in crops’ emergence
selling crops in advance
crops planted in furrow with film mulching on ridge
slica glass flourine doping
Purifying potable water of flourine
the water-consumption of crops
Policy & Market of Gather in the Crops Machinery
the ratio of output of main product to by-product of the crops
The Prediction of Crops Pests
the disaster rate of crops time sequence
Returning the crops fields to nature pasture
plant crops in the moon
Artificial regeneration with the aid of field crops
three crops in one year