中国生态农业学报2011，Vol.19Issue(1)：8-12,5.DOI:10.3724/SP.J.1011.2011.00008
深淹对狗牙根根际土壤酶活性及肥力的影响
Effect of submergence on rhizospheric soil enzyme activity and fertility of bermudagrass (Cynodon dactylon)
摘要
Abstract
Bermudagrass that naturally grows in water fluctuation (XC) and non-water fluctuation (FC) zones in the Three Gorges Reservoir Area was submerged in different depths of water in order to investigate rhizospheric soil enzyme activities and fertility under different submergence stresses. The results showed that sucrase activity in non-flooded rhizospheric soil was higher than those in soils submerged with different depths of water, suggesting the flooded soils were not as rich in plant nutrients as non-flooded soils.The activities of urase and acid phosphatase in FC rhizospheric soil were higher than those in XC rhizospheric soil. FC rhizospheric soil N content was significantly lower than that of XC after flooding. Total phosphorus in FC rhizospheric soil was significantly higher than that in XC before flooding. This suggested that XC used more soil nutrients than FC during growth period and reserved more energy which enhanced its submergence-resistant ability. All these findings indicated that there existed some relationships among rhizospheric soil enzyme activity, fertility and tolerance to submergence in bermudagrass under different habitats (submergence stress).关键词
深淹/消落带/狗牙根/根际土壤/酶活性/土壤肥力/三峡库区分类
农业科技引用本文复制引用
谭淑端,朱明勇,张克荣,张全发,姜利红..深淹对狗牙根根际土壤酶活性及肥力的影响[J].中国生态农业学报,2011,19(1):8-12,5.基金项目
国务院三峡建设委员会项目"三峡水库消落区植被重建试验示范研究"(SX2008-005)、湖南农业大学青年科学基金项目(09QN13)和国家科技支撑计划项目(2008BAD98B08)资助 （SX2008-005）
