运用气压过程分离法测定旱地苹果园土壤硝化—反硝化作用  

MEASUREMENT OF NITRIFICATION AND DENITRIFICATION IN UPLAND APPLE ORCHARD USING BAROMETRIC PROCESS SEPARATION

作　　者：葛顺峰[1] 姜远茂[2] 彭福田[1] 房祥吉[1] 陈汝[1] 

机构地区：[1]山东农业大学作物生物学国家重点实验室,山东泰安271018 [2]山东农业大学园艺科学与工程学院,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2010年第3期330-333,共4页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：现代苹果产业技术体系项目(MATS);农业部行业计划项目(nyhyzx07-024);十一五科技支撑项目(2008BADA4B05)

摘　　要：本研究利用气压过程分离法测定了旱地苹果园土壤的硝化—反硝化作用,介绍了该方法的基本原理和测定方法,并研究其在苹果园中的应用条件。结果表明,土柱取样深度以0~21 cm为宜,此深度既考虑到肥料和根际效应也避免土柱发生紧实作用;土柱取样量以每个处理3个环刀,重复3次较好;苹果园土壤总硝化速率和反硝化速率年周期变化动态呈先升高后降低的趋势。Nitrification and denitrification were determined using the Barometric Process Separation technique in upland apple orchard,and introduces the basic principles and determination method of the new method,and discusses some aspects in application of this method on upland apple orchard.The results showed that： The sampling depth of soil in 0 ~ 21cm is appropriate,taking into account the effects of fertilizer and rhizosphere,avoiding the soil compaction at the same time;The appropriate sampling amount of every T is three,and three replicates;Dynamic of annual variations of gross nitrification rate and denitrification rate was increase and then decrease.

关 键 词：气压过程分离法 硝化—反硝化作用 环刀土样 旱地苹果园 

分 类 号：S661.1[农业科学—果树学]