小花碱茅(Puccinellia tenuiflora)生长后盐碱土壤4种水解酶活性的变化  

Effect of Puccinellia tenuiflora growth on Hydrolytic Enzyme Activity in Saline-alkali Soil

作　　者：岳中辉[1] 潘东[2] 孙国荣[3] 肖玮[1] 郑景瑶[1] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,黑龙江省普通高等学校植物生物学重点实验室,哈尔滨150025 [2]桂林理工大学高等职业技术学院,南宁530001 [3]滨州职业学院,山东滨州256603

出　　处：《中国农学通报》2013年第6期113-116,共4页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金项目"叶绿体转基因烟草对土壤微生物群落的影响"(30970552);黑龙江省教育厅科学技术研究项目"黑龙江省西部盐碱草地土壤酶活性及影响因素研究"(12511153);哈尔滨师范大学青年学术骨干资助计划"黑龙江省退化盐碱草地土壤酶活性及影响因素研究"(KGB200808)

摘　　要：研究人工种草后盐碱土壤酶学特征的变化,可以为盐碱草地提高产草能力提供生物学理论依据。因此以种植小花碱茅不同年数的盐碱草地为研究对象,分析其土壤纤维素酶、脲酶、蛋白酶和磷酸酶活性的变化。结果发现,在小花碱茅同一生育期内,4种酶活性呈现不同的动态变化规律;小花碱茅生长不同年数后,磷酸酶活性先增加后下降,纤维素酶和脲酶活性下降,蛋白酶活性增加。进一步相关分析表明,小花碱茅生长后,土壤纤维素酶活性和脲酶活性显著正相关(P<0.01),和蛋白酶活性显著负相关(P<0.05);脲酶活性和蛋白酶活性显著负相关(P<0.05),而磷酸酶活性和其他酶活性间没有显著的相关关系。这说明小花碱茅生长后,盐碱草地4种水解酶活性的季节动态和年际动态规律不同,有必要对其内在机制进行进一步研究。The study on the enzymatic characteristics of saline-alkali soil with artificial grass growing can provide biological theoretic evidence for improving grass production ability.This paper discussed change rules of soil cellulase,urease,protease and phosphatase activities with Puccinellia tenuiflora growth in different year.The results showed that four enzymatic activities presented different dynamic regulations in the same childbearing period of Puccinellia tenuiflora growth.Meanwhile phosphatase activity increased at first and then descend,cellulase and urease activity declined,protease activity increased after Puccinellia tenuiflora growing.The correlation analysis showed that there were significantly positive relationships between soil cellulase and urease activity（P0.01）,between urease and protease activity（P0.05）,negative relationships between cellulase and protease activity（P0.05）,no relationships between phosphatase and other enzymes.From the above it concluded that seasonal and interannual dynamics of four soil hydrolytic enzymatic activities were different after Puccinellia tenuiflora growing.So further research on theirs underlying mechanisms is necessary.

关 键 词：小花碱茅 盐碱土壤 水解酶 

分 类 号：S154.2[农业科学—土壤学]