1) weed and soil
Shit and soil are different from weed and soil, but the meaning are similar.
2) Local grass-seed
3) Grassland Soil
4) Rush mat dust
Objective To evaluate the characteristics of Rush mat dust and its pollution to work site environment.
5) steppe soil
Organo-mineral complexes were separated from different developing direction and phases of steppe soils with fractional method of particle-size and density, and their mounts, humus contents, composition and ratio of carbon to nitrogen were analyzed.
Five different land utilization methods of saline steppe soil in the west of Jilin province were selected,including grazing grassland,fencing grassland,tillable,new paddy field and long-term cultivate paddy field.
6) earthen house
The structures of their houses were changed from earthen houses covered with grass into the brick and tile-roofed houses with wood frame.