clay sand

Study on clayey silt under loading and unloading condition by test;

粘质粉土的加卸载试验研究

By the difference analysis of the field and laboratory seepage testing results of the clayey silt , the cause of the difference of the two kinds of testing result has been found.

通过对粘质粉土现场、室内渗水试验结果的差异分析。

Study on the Fertilization Technique of Fly Ash and Nitrate Phosphate Fertilizer for Improving Wheat Yield on Clayey Soil in South Shanxi;

粘质土壤小麦高产的施用粉煤灰及氮磷肥技术初探