不同土壤管理方式下幼龄柑橘根区土壤酶活性动态变化  

Dynamic Change of Soil Enzyme Activities under Different Soil Managements in Citrus Root Zone

作　　者：潘学军[1,2] 张文娥[3] 罗国华[1,2] 樊卫国[1,2] 

机构地区：[1]贵州省果树工程技术研究中心,贵州贵阳550025 [2]贵州大学喀斯特山地果树资源研究所,贵州贵阳550025 [3]贵州大学农学院,贵州贵阳550025

出　　处：《土壤通报》2011年第5期1116-1119,共4页Chinese Journal of Soil Science

基　　金：贵州省"十一五"重大科技攻关项目(黔科合NZ字2005-3001);贵州省果树学科科技创新人才团队建设项目(黔科合人才团队(2008)88007号);贵州省果树工程技术研究中心建设项目(黔科合农G字[2007]4001号)资助

摘　　要：以盆栽2年生纽荷尔脐橙为试材,研究了清耕、自然生草和间种绿肥条件下幼龄柑橘生长期内根区土壤酶活性的动态变化。结果表明,间种绿肥和生草能显著提高柑橘根际土壤脲酶和蛋白酶活性,但2种酶的峰值出现时间不同,脲酶的峰值出现在绿肥成熟期和压青后,而蛋白酶峰值出现在压青前,压青引起蛋白酶活性降低。生草和间种绿肥的柑橘根际土壤过氧化氢酶略高于对照,但3处理间无明显差异;压青会引起过氧化氢酶活性降低,随着绿肥压青后腐解,过氧化氢酶又开始回升。因此,柑橘园内间种绿肥要适时压青。The experiment was conducted to study the variation of soil enzyme activities in root zone soil of 2-year Newhall Navel orange（Citrus sinensis Osbeck cv.Newhall Navel）seedlings,planted in pots under different managements of clean tillage,sod culture and intercropping green manure.The results showed that urease activity and protease activity were obviously improved by green manure and sod.The peaks of two enzymes＇ activity were different,the peaks of urease activity were coming at the age of green manures maturity and after green manures to soil,but that of protease was before green manures to soil,and the protease activity decreased after green manures to soil.The catalease activity was also higher after planting green manures and sod than control and its activity decreased after green manures to soil too.With the green manures decaying,its activity had gone up again,compared with green manures and sod treat,the catalease activity under the tillage was always increased.But the catalease activity among three treats had no significant difference in the whole experiment process.So the green manures should be buried in good time if planting them in the citrus orchard.

关 键 词：柑橘 绿肥 生草 土壤酶活性 动态变化 

分 类 号：S666[农业科学—果树学] S142[农业科学—园艺学]