榆林毛乌素沙地不同立地条件班克松生长规律研究  

Study on Growth Rhythm of Pinus banksiana inDifferent Site Conditions in Mu Us Sandy Area

作　　者：史社强 杨涛 王海鹰 席艳芸 SHI She-qiang;YANG Tao;WANG Hai-ying;XI Yan-yun(Shaanxi Institute of Sand Control,Yulin,Shaanxi 719000)

机构地区：[1]陕西省治沙研究所,陕西榆林719000

出　　处：《陕西林业科技》2019年第6期20-24,共5页Shaanxi Forest Science and Technology

基　　金：中央财政林业科技推广项目(2015[03]);国家重点研发计划项目子专题(2016YFC050080503);陕西省重点研发计划项目(2019TSLNY03-03)。

摘　　要：为了解和掌握班克松在毛乌素沙地的适应性及生长规律,分别在榆阳区、神木市、横山区、靖边县、定边县5个试验区,选取改良土壤、固定半固定沙地、盖沙黄土地、原状沙丘、盐碱地等立地条件进行造林试验,并对其物候期、生长规律及土壤养分含量等指标进行了分析研究。结果表明:班克松在5个不同立地环境条件下均能正常生长发育,完成整个生命周期。从不同立地条件土壤养分含量、土壤有机质、氮、磷、钾等含量综合来看,从高到低依次为榆阳区、神木市、靖边县、横山县、定边县,与班克松高生长量变化趋势基本吻合。班克松适应毛乌素沙地的气候条件和土壤环境,健壮生长需要充足的土壤养分含量环境;班克松作为优良常绿针叶树种可在榆林毛乌素沙地栽植。In order to understand and master the adaptability and growth rhythm of Pinus banksiana in the Mu Us sandy area,the afforestation experiments were carried out in five experimental areas,such as Yuyang district,Shenmu city,Hengshan district,Jingbian county and Dingbian county,under the site conditions of improved soil,fixed semi fixed sand land,covered sand loess land,undisturbed sand dune and saline alkali land.The phenology,growth rhythm,soil nutrient content and other indexes were analysed and studied.The result showed that Pinus banksiana could normally grow and develop under different site conditions in the five experimental areas,with the whole life cycle of vegetative growth and reproductive growth.Of the comprehensive soil organic matter,nitrogen,phosphorus and potassium contents,Yuyang district is highest followed by Shenmu City,Jingbian County,Hengshan County and Dingbian County in turn,which are basically consistent with the trend of high growth of Pinus banksiana.It shows that Pinus banksiana can completely adapt to the climatic conditions and soil environment in the Mu Us sandy area.To cultivate robust trees,its growth also needs an environment with sufficient soil nutrient content.The successful introduction of Pinus banksiana has added an excellent conifer species to the ecological environment construction in the Mu Us sandy area.

关 键 词：毛乌素沙地 班克松 立地条件 生长规律 

分 类 号：S791.242.01[农业科学—林木遗传育种]