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为探究秸秆覆盖对滨海盐碱地土壤含盐量、水分、p H值的动态变化规律,进行秸秆覆盖试验(FG),并以不覆盖秸秆作为对照组(CK)。结果表明:在FG 0~20、20~40 cm土层土壤盐度分别下降了16.09%和7.26%,土壤含水量分别增加了69.21%和59.08%。由此可得,秸秆覆盖能有效改良滨海盐碱地土壤,减少了土壤水分蒸发损失,提高了水分利用效率,在一定程度上抑制了土壤中可溶性盐分的表聚作用,从而达到改良滨海盐碱地的目的。
In order to explore the dynamic changes of soil salinity, water content and p H value in coastal saline soils, straw mulching test (FG) was conducted to investigate the dynamic changes of p H value. The results showed that soil salinity decreased by 16.09% and 7.26%, and soil water content increased by 69.21% and 59.08% respectively in the soil layers 0-20 and 20-40 cm. Thus, straw mulching can effectively improve the coastal saline-alkali soil, reduce the loss of soil water evaporation and improve water use efficiency, to a certain extent, inhibit the surface aggregation of soluble salts in soil so as to achieve the purpose of improving coastal saline-alkali soil.