欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2004, Vol. ›› Issue (6): 1019-1024.

• 研究论文 • 上一篇    下一篇

稻-麦轮作系统土壤糖酶活性对开放式CO2浓度增高的响应

张丽莉1,2, 张玉兰1,2, 陈利军1, 武志杰1   

  • 收稿日期:2003-11-03 修回日期:2004-01-17
  • 通讯作者: 陈利军
  • 基金资助:
    中国科学院沈阳应用生态研究所知识创新领域前沿资助项目(SLYQY0401)

Response of soil saccharidase activities to free-air carbon dioxide enrichment (FACE) under rice-wheat rotation

ZHANG Lili1,2, ZHANG Yulan1,2, CHEN Lijun1, WU Zhijie 1   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2003-11-03 Revised:2004-01-17

摘要: 研究了稻-麦轮作系统中空气CO2浓度增高(200 μmol·mol-1)对土壤蔗糖酶、木聚糖酶、纤维素酶活性及土壤氮、磷、硫含量变化的影响.结果表明,与对照相比,种植小麦和水稻条件下FACE处理的土壤蔗糖酶活性升高;木聚糖酶活性在小麦的拔节期、抽穗期和成熟期以及水稻的抽穗期和成熟期显著高于对照;纤维素酶活性略降.相关分析表明,土壤碱解态氮含量与蔗糖酶之间呈显著的线性正相关关系.

关键词: CO2浓度增高, 土壤, 蔗糖酶, 木聚糖酶, 纤维素酶, 酶活性

Abstract: This paper studied the effect of 200 μmol·mol-1 CO2 elevation on soil saccharidase activities and soil nutrient contents under rice wheat rotation.The results showed that under both wheat and rice planting,CO2 elevation increased soil invertase activity.The elevated CO2 significantly increased soil xylanase activity at the jointing,heading and ripening stages of wheat and at the heading and ripening stages of rice,and slightly decreased soil cellulase activity.Correlation analysis showed that there was a significantly linear positive relationship between soil alkali hydrolyzed nitrogen and soil invertase activity.

Key words: Free-air CO2 enrichment(FACE), Soil, Invertase, Xylanase, Cellulase, Enzyme activity

中图分类号: