Mainly chernozem soil, followed by loess.
土壤主要是黑钙土，其次是黄土。
The Ecological Effect of Grass and Crop Rotation on Ridge Chernozem
岗平地黑土草田轮作的生态效应
The effect of a quantify chemical fertilizer on Corn Yield in light chernozem
淡黑钙土化肥定量和增产效益的研究
On method of determination of soil available phosphorus in light chernozem and black soil
黑土和淡黑钙土的有效磷测定方法的研究
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