土壤2017，Vol.49Issue(4)：733-737,5.DOI:10.13758/j.cnki.tr.2017.04.014
盐碱胁迫对香樟幼苗根际土壤酶活性的影响
Effect of Salinity-alkalinity Stress on the Rhizosphere Soil Enzyme Activity of Camphor Seedlings
摘要
Abstract
The potted camphor seedlings of two years were taken as the materials and were treated by the mixed solution of salinity-alkalinity (Na2CO3︰NaHCO3 = 1︰1) with different concentrations (0, 50, 100 and 200 mmol/L), the enzyme activities and pH of rhizosphere soils were studied. The results showed that pH value of rhizosphere soil increased with the stress time and concentration of salinity-alkalinity; Urease activity of 0 mmol/Ltreatment showed an increasing trend, but those of salinity-alkalinity stress increased first and then degreased. Urease activity increased with the increase of salinity-alkalinity concentration. Catalase activity showed an increasing trend, and it also increased with the increase of salinity-alkalinity concentration. Invertase activity increased first and then decreased, and it decreased with the increase of salinity-alkalinity concentration. Alkaline phosphatase activity was promoted under slight salinity-alkalinity stress (0–50 mmol/L) but restrained under severe salinity-alkalinity stress (50–200 mmol/L). Proteinase activity of 0 mmol/L treatment showed an increasing trend, but inhibited under salinity-alkalinity stress. The conversion of available nutrients in soil and nutrient absorption by plants are influenced by salinity-alkalinity stress.关键词
盐碱胁迫/香樟幼苗/土壤酶活性Key words
Salinity-alkalinity stress/Camphor seedling/Soil enzyme activity分类
农业科技引用本文复制引用
颜路明,郭祥泉..盐碱胁迫对香樟幼苗根际土壤酶活性的影响[J].土壤,2017,49(4):733-737,5.基金项目
2014年闽江学院校级科研专项(MYZ14027)资助. （MYZ14027）
