章古台人工固沙林根际土壤性质研究  

Characteristics of Rhizosphere Soil of Sand-fixation Plantation in Zhanggutai Area

作　　者：曹文生[1] 张百习[1] 张学利[1] 孙良岩 

机构地区：[1]辽宁省固沙造林研究所,辽宁阜新123000 [2]辽宁省高速公路管理局

出　　处：《防护林科技》2010年第1期7-10,19,共5页Protection Forest Science and Technology

摘　　要：对章古台地区人工固沙林的根际土壤和非根际土壤进行了对比研究,结果表明:不同树种根际土壤pH值低于非根际土壤,有机质含量均高于非根际土壤;全N、碱解N、速效K表现为富集,速效P表现为亏缺,其中樟子松亏缺最为严重。随樟子松林龄增长,根际土壤和非根际土壤pH值表现为下降趋势。根际土壤有机质含量较非根际土壤有机质提高的幅度以中龄林阶段最高;根际土壤的CEC值中龄林和近熟林阶段小于非根际土壤;根际土壤中盐分积累的程度随林龄增长逐渐下降;不同发育阶段,根际土壤速效P含量均低于非根际土壤。樟子松感病后,根际土壤的pH值随感病程度的加重而上升,有机质含量明显下降,CEC值有一定程度的提高,盐分、全N、速效N、速效K的富集程度和速效P的亏缺程度明显下降。Rhizosphere soil ＆ non-rhizosphere soil of sand-fixation plantation in Zhanggutai area were comparatively studied. Result shows that： the pH value of rhizosphere soil of different species are lower than that of non-rhizosphere soil;organic matter content are all higher than that of non-rhizosphere soil;total N, alkaline hydrolysis N, available K appear enrichment ; available P a.ppears deficit, among them Pinus sylvestris var. mongolica deficit is the m.ost serious. With the increase of stand age of Pinus sylvestris var. mongolica ,pH value of rhizosphere soil ＆ non-rhizosphere soil appear tendency of decrease. Organic matter content of rhizosphere soil,compared with organic matter increment of non-rhizosphere soil, the stage of half mature stand is the maximum ; stage of half mature stand ＆ near mature forest of CEC value rhizosphere soil are less than that of non-rhizosphere soil; accumulation of salt of rhizosphere soil decrease gradually with the increase of stand age of Pinus sylvestris var. mor^golica ; available P content of rhizosphere soil are all lower than that of non-rhizosphere soil in different development satge, pH value of rhizosphere soil of susceptible Pinus sylvestris var. mongolica increase with the infection disease ; organic matter content decrease significantly ; CEC value has certain degree of increase ; enrichment degrees of salt ,total N, available N, available K and deficit degree of available P decrease significantly.

关 键 词：章古台 固沙林 根际土壤 非根际土壤 

分 类 号：S714.2[农业科学—林学]