对呈贡县14个村的蔬菜土壤上下层有机质含量和阳离子交换量进行调查分析。
The article investigates and analyzes the content of organic matter and cationic exchange of upper and under layer of soil planting vegetable of 14 villages in Chenggong county.
逐步回归显示，土壤有机质、速效磷、速效钾和阳离子交换量对烟叶品质有较大的影响；
The results of stepwise multiple regression analysis show that OM, AK, AP, and CEC are the key tobacco quality-limiting factors.
原因是铵饱和沸石的阳离子交换量和比表面积有所增加，同时铵饱和沸石的孔穴和通道也较天然沸石更加均一和畅通。
Compared with natural zeolite, the specific surface area and CEC of ammonium saturated zeolite were larger, and also the interspaces channels were more uniformed.
原因是铵饱和沸石的阳离子交换量和比表面积有所增加，同时铵饱和沸石的孔穴和通道也较天然沸石更加均一和畅通。
Compared with natural zeolite, the specific surface area and CEC of ammonium saturated zeolite were larger, and also the interspaces channels were more uniformed.
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