生态环境学报2011，Vol.20Issue(2)：270-275,6.
滨海4种盐生植物根际土壤酶活性特征与主要养分的关系
Characteristics of soil enzymatic activitys and relationship with the main nutrient in the rhizosphere of four littoral halophytes
摘要
Abstract
Plants can directly or indirectly affect the soil enzyme activity. The enzyme activity and type in the rhizosphere can change effectiveness of the soil nutrients, thus influence absorption and utilization of the nutrients to plant. To investigate nutrient content and soil enzyme activity in the rhizospheres of four littoral halophytes, a rhizobag experiment was conducted which provided theoretical basis for improvement and utilization of littoral solonchak by planting halophytes, in the light salinized fluvo-aquic soil and littoral solonchak. These results indicated inverse dynamics for sucrase, protease and catalase in both soil rhizospheres. In littoral solonchak, the activity of the three soil enzymes in the rhizosphere is generally higher than in bulk soils while that in light salinized fluvo-aquic soil are lower. In littoral solonchak, the activity of alkaline phosphcrease, catalase and invertase is related significantly with soil nutrient content, which could be a strong indicator of soil nutrient status. Total N increased significantly, but total P decrease in the rhizosphere compared with bulk soil. Available N and P have inverse dynamics in that while available N decreases, available P increases, except for Phragmites communis. Between alkaline phosphcrease, catalase, invertace activity and all kinds of soil nutrient content are most closely related. The parameters of enzyme activity in the rhizosphere showed that Suaeda salsa should have the best influence to soil enzyme activity in solonchak.关键词
根际/滨海盐生植物/养分/土壤酶活性Key words
rhizosphere/ littoral halophyte/ nutrient/ soil enzymatic activity分类
农业科技引用本文复制引用
弋良朋,张辉..滨海4种盐生植物根际土壤酶活性特征与主要养分的关系[J].生态环境学报,2011,20(2):270-275,6.基金项目
国家自然科学基金项目(40940010) （40940010）
天津师范大学博士基金项目(52X09016) （52X09016）
