文献类型：期刊文献

中文题名：盐胁迫下甘蔗根际土壤微生物量及其酶活性的效应分析

英文题名：Effects of salt stress on microbial biomass and enzyme activities in rhizospheric soil of sugarcane

作者：莫俊杰[1];彭诗春[1];叶昌辉[1];陈妤[1];周鸿凯[1]

机构：[1]广东海洋大学农学院,广东湛江524088

年份：2016

卷号：43

期号：6

起止页码：103

中文期刊名：广东农业科学

外文期刊名：Guangdong Agricultural Sciences

收录：CSTPCD

基金：国家自然科学基金(41073059);广东省科技计划项目(2013B020301005;2013B020301008)

语种：中文

中文关键词：盐胁迫;甘蔗;土壤微生物;土壤酶活性;相关性

外文关键词：salt stress; sugarcane; soil microbe; soil enzyme activity; correlation

中文摘要：研究4个盐胁迫梯度下4个甘蔗品种根际土壤微生物种群数量、酶活性及其相关性。结果表明:在盐胁迫水平为0.0%、0.2%、0.5%、0.8%下,甘蔗根际土壤中的细菌、放线菌和真菌的数量及其脲酶、蔗糖酶、过氧化氢酶的活性均随着盐胁迫强度增加而明显降低,尤其在有盐与无盐之间差异极显著,表明甘蔗根际土壤中的微生物种群对盐分敏感,它们生长受到抑制、数量急剧减少,土壤酶的活性亦是同样的表现;相关、偏相关和典型相关分析表明,在盐胁迫下,甘蔗根际土壤微生物及酶活性间有显著的直线相关性和典型相关性,放线菌数量与蔗糖酶、过氧化氢酶活性,以及脲酶活性与蔗糖酶活性间有显著的偏相关关系。

外文摘要：This study measured the microbial population size,enzyme activity and their relationship in rhizospheric soil of sugarcane at four different salt stress levels with four sugarcane varieties as materials. The results showed that,under the salt stress levels of 0.0%,0.2%,0.5%,0.8%,the sugarcane rhizospheric soil bacteria,actinomycetes,fungi number and urease,sucrase,catalase enzyme activity reduced significantly with the increase of salt stress,especially the differences between salt stress and no salt stress were extremely significant. These indicated that the sugarcane rhizospheric soil microbial population was sensitive to salt stress,their growth inhibited,a sharp reduction was found in the number,and the soil enzyme activities had the same performances. Correlation,partial correlation and canonical correlation analysis showed that under saline stress,there was a significant linear correlation and canonical correlation between sugarcane rhizospheric soil microbial biomass and enzyme activity. There was a significant partial correlation between actinomycetes number and invertase,catalase activity,as well as urease activity and invertase activity.