黑垆土是我国西北黄土侵蚀地区主要的地带性土类，也是一种古老的耕种土壤。
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.
以野外试验和室内分析相结合的方法，研究了黄土高原南部黄土侵蚀时养分变化的规律。
Based on field experiment and laboratory analysis, regular pattern of variation of soil nutrient was studied in south of the Loess Plateau.
采用模拟降雨试验方法研究了黄土道路侵蚀过程，取得了如下结果。
Based on simulated rainfall experiments, erosion processes on loess roads are studied, and following results are obtained.
应用推荐