摘要
研究不同生长年限紫花苜蓿(Medicago sativa)对土壤养分和酶活性的影响,探讨土壤酶活性作为土壤肥力指标的可能性。结果表明,不同生长年限苜蓿地不同土层土壤养分含量和酶活性与对照存在显著差异(P<0.05)。土壤脲酶、过氧化氢酶、过氧化物酶活性与土壤养分有一定的相关性,可以用来表示土壤肥力的高低,也可以作为敏感的土壤生物学指标。但土壤多酚氧化酶活性与土壤养分相关性较差。
An experiment was conducted to investigate the effects of growth years of alfalfa on the enzyme activity and nutrient in soil for proposing that soil enzyme activity could be considered as one of the most important indexes to indicate soil fertility.The results of this study showed that the enzymes activity of nutrients in soil every soil layers with different growing years was significantly higher or lower than that of control（P0.05）.The enzymes activity of urease,catalase and peroxidase were correlated with soil fertilities,implying that the activities of enzymes could be used to indicate the changes of soil fertility and sensitiveness of soil biology.The activity of polyphenol oxidase was not strongly correlated with soil nutrients.
出处
《草业科学》
CAS
CSCD
北大核心
2010年第11期21-25,共5页
Pratacultural Science
基金
兵团科技攻关项目(2007ZX02)
国家科技支撑项目(2007BAC17B04)
关键词
苜蓿
生长年限
土壤养分
酶活性
相关性
alfalfa
growth years
soil nutrient
enzyme activity
correlation
