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为了对比自然状态下水盐胁迫对艾比湖湿地自然保护区植物根际土壤酶活性的影响,采用抖落法,对艾比湖东南区域不同群落内根际土壤酶活性进行了研究,发现:随着土壤含水量的增加,根际土壤酶的活性增加而非根际土壤酶活性受到抑制;不论是根际或非根际土壤,高盐分含量限制过氧化氢酶和脲酶的活性,增加中性磷酸酶和碱性磷酸酶的活性;土壤酶活性与土壤有机质显著正相关,且大都呈现出碱性激活的特点;植物的存在降低了环境的胁迫,极大改善了根际土壤的微环境。不同样地及不同土壤剖面层中土壤酶活性的限制因子不同,分析酶活性限制因子时要区别对待、综合考虑。
In order to compare the effect of water and salt stress on rhizosphere soil enzyme activities in the natural reserve of Aibi Lake wetland in natural condition, the rhizosphere soil enzyme activities in different communities in the southeast of Aibi Lake were studied by shake-off method. With the increase of soil water content, the activities of rhizosphere soil enzymes increased, but not the rhizosphere soil enzyme activities were inhibited. Both rhizosphere and non-rhizosphere soil, the high salt content limited the activity of catalase and urease and increased the neutral Phosphatase and alkaline phosphatase. Soil enzyme activity was significantly and positively correlated with soil organic matter, and most of them showed the characteristics of alkaline activation. The presence of plants reduced the environmental stress and greatly improved the microenvironment of rhizosphere soil. Different soil and different soil profiles of soil enzyme activity of the limiting factors, analysis of enzyme activity limiting factors to be treated differently, considering.