设为首页  |   加入收藏
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. YAN Luming,GUO Xiangquan.Effect of Salinity-alkalinity Stress on the Rhizosphere Soil Enzyme Activity of Camphor Seedlings[J].Soils,2017,49(4):733-737 本文二维码信息
二维码(扫一下试试看!)
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
投稿时间:2017-04-02  修订日期:2017-04-27
DOI:10.13758/j.cnki.tr.2017.04.014
中文关键词:  盐碱胁迫  香樟幼苗  土壤酶活性
Key Words:Salinity-alkalinity stress  Camphor seedling  Soil enzyme activity
基金项目:2014年闽江学院校级科研专项(MYZ14027)资助。
作者单位E-mail
颜路明 闽江学院美术学院环境艺术教研室 402655592@qq.com 
郭祥泉 三明市林业局  
摘要点击次数: 153
全文下载次数: 190
中文摘要:
      以2年生盆栽香樟幼苗为材料,分别施用0、50、100、200 mmol/L的Na2CO3和NaHCO3(1︰1)混合溶液,研究盐碱胁迫对香樟幼苗根际土壤酶活性的影响。结果表明:随着盐碱胁迫时间的延长,各处理土壤pH不断上升,且随盐碱处理浓度越高,pH越大;对照的脲酶活性呈不断上升的趋势,盐碱胁迫处理的脲酶活性呈先升后降的趋势,盐碱处理浓度越高,土壤脲酶活性越小;过氧化氢酶活性呈不断上升的趋势,盐碱处理浓度越高,过氧化氢酶活性越大;土壤蔗糖酶活性呈先升后降的趋势,盐碱处理浓度越高,土壤蔗糖酶活性越小;轻度(0 ~ 50 mmol/L)盐碱胁迫程度促进碱性磷酸酶活性,而重度盐碱(50 ~ 200 mmol/L)胁迫抑制碱性磷酸酶活性;0 mmol/L处理的蛋白酶活性不断上升,而盐碱胁迫抑制蛋白酶活性。盐碱胁迫影响了土壤中有效养分的转化。
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/L treatment 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.
查看全文  查看/发表评论  下载PDF阅读器

您是第863785位访问者
版权所有 © 《土壤》编辑部
本系统由北京勤云科技发展有限公司设计   京ICP备09084417号
手机扫一扫看