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通过对4种土壤母质发育的8个土壤对SO2-4吸附研究发现:土壤最大吸附量与土壤的酸度呈负相关,与有机质呈正相关。砂性母质发育的土壤对SO2-4吸附能力明显弱于粘性母质发育的土壤。在粘性母质红壤系列中,阳离子交换量与SO2-4吸附呈显著负相关(r=-0.9006*)。在同一种母质上,利用方式和管理施肥水平影响土壤对SO2-4吸附能力,宏观范围内以吸附量和pH预测土壤缺硫的情况具有新意义。
Through the study on SO2-4 adsorption on 8 soils derived from four kinds of soil parent materials, it was found that the maximum soil adsorption capacity was negatively correlated with soil acidity and positively correlated with organic matter. Soils with sandy parent development were significantly weaker in SO2-4 than those with parent development. In the viscous parent red soil series, the cation exchange capacity was negatively correlated with SO2-4 adsorption (r = -0.9006 *). In the same kind of parent material, the way of applying fertilizers and the management of fertilization level affected soil adsorption capacity of SO2-4, with the adsorption amount and pH within the macroscopic range to predict sulfur deficiency in soil has a new meaning.