Mainly chernozem soil, followed by loess. 土壤主要是黑钙土，其次是黄土。
This thesis studied the dynamic relationship between the soil orgenic matter and enzymatic activity in chernozem. 研究了黑钙土中土壤有机质与7种土壤酶活性之间的动态关系。
Meanwhile, the paper descriped water flow curve of light chernozem soil under different rolling condition by the method of dairy following measure. 并采取逐日跟踪监测的方法，描绘了不同镇压条件下种床土壤水分变动曲线。
Yi`an lies on the famous black soil belt of the world and soil is mainly composed of meadow soil and chernozem and is very fertile. 项目概述： 依安位于世界著名的黑土带上，土质以草甸土、黑钙土为主，土壤肥沃，适合甜菜、马铃薯等农作物生长。
This paper concerns water situation,soil constitution,PH value,organic matter content and humic composition of chernozem under different artificial forest. 本文对不同人工林下黑土的水分状况、土壤结构、酸碱性、有机质含量及腐殖质组成进行了研究。
LIU Wei,LV Yaquan.Study on degradation origin and ecologic renovation of chernozem in China[J].Water Resources &Hydropower of Northeast China,2006,24(1):59-61. [4]刘巍;吕亚泉.;中国黑土地退化成因及生态修复学研究[J]
