【摘要】 通过测定不同改良年限盐渍土腐殖质的变化及过氧化氢酶、脲酶的活性,研究生物有机肥对盐渍土的改良效果。结果表明,生物有机肥均可以提高土壤过氧化氢酶和脲酶活性,且连续多年施用生物有机肥地块的改良效果优于开垦1年地块,其中以全量有机肥提高幅度最为明显,分别为8.85%,16.57%。腐殖质及其各组分的含量在生物有机肥的处理下均提高。改良多年的盐渍土,HA/FA、E4/E6比值同时提高,说明生物有机肥不仅可改善土壤腐殖质的腐殖化程度,还可提高其活性。更多还原

【Abstract】 A field experiment was conducted to study the effects of bio-organic fertilizer on the saline soil with the measurement of the activity of catalase,urease and the humus.The application of bio-organic fertilizer could enhance the activity of catalase and urease,and the improvement effect of applying bio-organic fertilizer yearly was superior to one-year application.Then the best treatment was the total amount bio-organic fertilizer, the increasing ranges were 8.85%,16.57%.The application of bio-organic fertilizer could increase the content of humus compositions.The ratios of HA/FA,E4/E6were both higher,it showed that bio-organic fertilizer could improve the structure and increase the activity of humus,ameliorate the soil fertility.更多还原