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为了探索内陆苏打盐碱地的改良新方法,试验采用有机废弃物等作为土壤孔隙改善剂,通过改善盐碱土交换性钠含量,降低土体pH值等相结合的方法,对大安市典型内陆盐碱土进行了改良试验,结果表明:施用改良剂,20cm土层内苏打盐碱土的理化性状得到明显的改善,土壤颗粒均向较大粒径方向发展,土壤的pH值显著降低,交换性钠及土壤的全盐量均明显下降。石膏+浓硫酸+珍珠岩处理pH值降低了10%以上;石膏+秸秆处理盐分含量下降最多,为79%,其次为石膏+发酵料处理,全盐量降低了74%。不同改良处理的阳离子交换量较对照均有不同程度的增长,但差异不显著。
In order to explore a new method for improving the soda saline land in the hinterland of China, the experiment uses organic wastes as the soil pore improver. By combining the method of improving the exchangeable sodium content in saline-alkali soil and reducing the pH value of soil, The results showed that the physical and chemical properties of soda ash-saline soils in 20cm soil layer were improved obviously with the application of improver, the soil particles developed to larger size, the soil pH value was significantly reduced, the exchangeable sodium and Soil salt content decreased significantly. Gypsum + concentrated sulfuric acid + perlite processing pH value decreased by more than 10%; gypsum + straw salt content decreased the most, 79%, followed by gypsum + fermentation materials, the total salt decreased by 74%. The cation exchange capacity of different modified treatments increased to some extent compared with the control, but the difference was not significant.