毛乌素沙地飞播杨柴林平茬复壮成效分析  

Analysis on Stumping Rejuvenation Effect of Aerial Seeded Hedysarum mongolicum Shrubs in Mu Us Sandy Land

作　　者：李卓凡[1,2] 苏和 王晓江[1,2] 张雷[1,2] 洪光宇 高孝威[1,2] 李梓豪 海龙[1] 武永智 吴建新[3] 白艳 苏雅拉巴雅尔 LI Zhuo-fan;Suhe;WANG Xiao-jiang;ZHANG-Lei;HONG Guang-yu;GAO Xiao-wei;LI Zi-hao;HAI Long;WU Yong-zhi;WU Jian-xin;BAI Yan;Suyalabayaer(Inner Mongolia Academy of Forestry,Hohhot 010010,China;Daqing Mountains National Forest Ecosystem Observation and Research Station,Inner Mongolia,Hohhot 010010,China;Inner Mongolia Management Centre of Grain for Green and Foreign Aid Project,Hohhot 010010,China;Inner Mongolia Forestry and Grassland Pest Control and Quarantine General Station,Hohhot 010010,China;State-owned Wulantaolegai Sand Control Station of Uxin County,Inner Mongolia,Uxin County 017300,China)

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古大青山森林生态系统国家定位观测研究站,内蒙古呼和浩特010010 [3]内蒙古自治区退耕还林和外援项目管理中心,内蒙古呼和浩特010010 [4]内蒙古自治区林业和草原有害生物防治检疫总站,内蒙古呼和浩特010010 [5]乌审旗国有乌兰陶勒盖治沙站,内蒙古乌审旗017300

出　　处：《内蒙古林业科技》2021年第2期6-9,14,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：内蒙古自治区自然科学基金面上项目(2018MS03036,2019MS03036);内蒙古自治区科技重大专项(zdzx2018060,2019ZD007);国家自然科学基金项目(31960284)。

摘　　要：以毛乌素沙地飞播杨柴林为研究对象,对杨柴林的平茬方式、预留盖度、平茬周期进行了试验研究。结果表明:带状平茬可降低林分的枯枝率,提高单位面积内株丛数量,其单位面积内活枝数量是平茬前的1.51倍;预留30%~40%盖度单位面积内具有较高的株丛数量、活枝数量和生物量,同时具有较低的枯枝率,可在生产中选择此范围预留盖度进行作业;通过连年监测,平茬第3 a枯枝率可达到24.21%~49.89%,杨柴林表现为衰退,在生产中可选择3 a作为飞播杨柴林的平茬周期。Taking the aerial seeded Hedysarum mongolicum shrubs in Mu Us Sandy Land as research object,the experimental studies on stumping mode,reserved coverage and stumping period of shrubs were carried out.The results showed that stripe stumping could reduce the deadwood rate,increase the number of cluster per unit area,and the number of living branches per unit area is 1.51 times of that before stumping.There was a higher number of cluster,living branches and biomass and a lower deadwood rate per unit area with reserved coverage of 30%-40%,which could be used during production.Through continuous year monitoring,the deadwood rate can reach 24.21%-49.89%at the third year after stumping,and three years can be chosen as a stumping period for aerial seeded Hedysarum mongolicum shrubs in production.

关 键 词：杨柴 平茬复壮 毛乌素沙地 成效分析 

分 类 号：S793.9[农业科学—林木遗传育种]