The dark loessial soil (Heilutu) is not only a main zonal soil group in the loess plateau of northwestern China, but an ancient cultivated soil.
It was 20 years after Sven Hedding left that field archaeology was born in China because he really knew the value of this bud and cultivated soil for it.
Heavy metals and the residue of pesticide in cultivated soil of Radix Pseudostellariae conformed to the standard of GB15618-19952001.
The research measured sheer strength of the North of Mount Yin of Inner Mongolia bare cultivated soil, and used the sheer strength to solve aerodynamic roughness length.
