脱硫废弃物施用对碱化土壤油葵生长及土壤酶活性的影响  

Effect of Sunflower Growth and Enzyme Activity in Alkali Soil Improvement with Application of Desulphurization Byproducts

作　　者：李凤霞[1,2] 许兴[1] 王学琴[1] 杨涓[3] 郭永忠[4] 

机构地区：[1]宁夏大学农学院,西宁银川750021 [2]宁夏农林科学院农业资源与环境研究所,西宁银川750002 [3]宁夏大学生命科学院,西宁银川750021 [4]宁夏农林科学院荒漠化研究所,西宁银川750002

出　　处：《土壤通报》2011年第4期962-966,共5页Chinese Journal of Soil Science

基　　金：国家科技支撑计划项目(2007BAC08B01);国家自然科学基金项目(40961020)资助

摘　　要：通过盆栽试验研究脱硫废弃物不同施用量（0、2.5、5、7.5和10 g kg^-1）处理改良碱化土壤对油葵生长及其土壤脲酶、过氧化物酶、转化酶、碱性磷酸酶活性的影响,结果表明：脱硫废弃物改良碱化土壤能够提高盆栽油葵的株高1.17%-19.96%,地上植株鲜重提高12.70%-42.79%,地下根系鲜重提高9.46%-49.32%,根系生长长度提高10.8%-28.05%;脱硫废弃物改良碱化土壤的对土壤有机质含量影响不明显;另外适量的脱硫废弃物施用对上述土壤四种酶活性都有一定的提高作用;脱硫废弃物改良该碱化土壤的施用量以5.0 g kg^-1土的处理最佳;因此土壤酶可以作为碱化土壤改良效果评价的指标。The experiment with different application rate of desulphurization byproducts（0 g kg-1 soil,2.5 g kg-1 soil,5 g kg-1 soil,7.5 g kg-1 soil,10 g kg-1） on potted Sunflower growth,urease,peroxidase,invertase and alkaline phosphatase activity has been studied in alkaline soil.The results showed that desulphurization byproducts application could significantly increase potted sunflower plant height（1.17%-19.96%）;and increase biomass（12.70%-42.79%）.Plant underground root fresh weight increased 9.46%-49.32%,root growth and length increased 10.8%-28.05%.Application of desulphurization byproducts had some role in the improvement of soil above four kinds enzyme activities.The application amount of 5 g kg-1 soil was the best in improving alkaline soil,so they could be used as the evaluation indicators in alkaline soil improvement effect.

关 键 词：脱硫废弃物 改良 碱化土 土壤酶活性 

分 类 号：S154.2[农业科学—土壤学]