original soil meaning in Chinese

老土
未垦地,原始土壤
原土
原状土

The analysis of micro - climate site of the road greenbelt in the building process of expressway , a lot of calcareousness , powder of coal ash , asphaltum and stone were put into used . on one hand , it completely destroys the original soil structure , making the soil really barren , on the other hand , the rise of roadbed also affects the ground water to go up , making the soil very drought
路体绿地立地条件分析高速公路在修建过程中，采用了很多的石灰、粉煤灰、沥青、石块等材料，一方面使原有的土壤结构被彻底破坏，土质十分贫瘠，另一方面路基抬高影响地下水位上升，土壤十分干旱。
( 2 ) the emitter discharge of simple subsurface drip irrigation is greater than the infiltration rate after formed saturate loop in the short time . infiltration rate under subsurface drip irrigation is not only affected by soil texture , original soil moisture content and soil bulk density et al , but also by emitter discharge , which affect by water pressure
（ 2 ）地下滴灌的灌水器出流量一般在较短时间内形成饱和圈后，土壤入渗速率不仅受到土壤质地、土壤初始含水率、土壤容重等因素的制约，而且还与影响灌水器出流速率的压力水头有关。