天然沙冬青平茬复壮技术研究  

Stumping and Rejuvenating Techniques for Natural Ammopiptanthus mongolicus

作　　者：董雪[1,2] 虞毅 高永[3] 杨永华 朝格吉乐 高建斌 

机构地区：[1]国际竹藤中心,北京100102 [2]中国林业科学研究院沙漠林业实验中心,巴彦淖尔015200 [3]内蒙古农业大学生态环境学院,呼和浩特010019 [4]西鄂尔多斯国家级自然保护局,鄂尔多斯016100 [5]鄂尔多斯市林业局,鄂尔多斯017000

出　　处：《科技导报》2014年第23期55-61,共7页Science & Technology Review

基　　金：国家林业公益性行业科研专项(201304305)

摘　　要：天然植物沙冬青在荒漠地区自然生态平衡中占据着重要的地位，且具有较高的科学研究价值，但由于受多种因素综合影响已濒临灭绝，为保护和优化沙冬青种群结构。探索其更新复壮的方法与技术变得至关重要。对西鄂尔多斯国家级自然保护区珍稀濒危植物沙冬青进行不同高度、不同地径、不同茬口处理方式的平茬试验。结果表明，各处理间萌蘖枝条数和生长量有所不同，萌蘖枝条生长过程中，其萌蘖枝条数、生长量与留茬高度成负相关关系，但与平茬粗度成正相关关系。天然沙冬青适宜的留茬高度为3cm，第二年生长季末丛高为44．5cm；当年萌蘖枝条数最多，均值为37．4条，是对照的5．9倍；萌蘖枝条经过两年的生长，枝条长度已达45．9cm，比对照增加了33．2cm，萌蘖枝条基径达9．98mm。沙冬青不同灌丛平茬效果要优于同一灌丛处理。适宜的平茬粗度为15．09～19．95mm。且茬口经涂油漆处理恢复生长效果更好。Natural Ammopiptanthus mongolicus in the desert region plays an important role in maintaining natural ecological balance, thus having high research value. Because of multiple factors, however, it has become endangered plant. For protecting and optimizing the population structure of this plant, it is important to explore the rejuvenation techniques. The stumping experiment was carried out on A. mongolicus in the western Ordos National Nature Reserve under different stumping heights, ground diameters, and treatments. The results show that the growth increment of new branches had apparent negative correlation with stumping heights, but had apparent positive correlation with stubble diameters. The appropriate stubble height for natural A. mongolicus was 3 cm. After the second growing season, the plant height was 44.5 cm, and the average quantity of new germinated branches was 37.4, 5.9 times of the control. After two years growth, the length of new germinated branches reached 45.9 cm, an increase of 33.2 cm compared with thatof the control, and the base diameter reached 9.98 mm. Treatment of different A. mongolicus brush had better effects than that of the same brush. The appropriate stubble diameter was 15.09-19.95 mm, and painting the stubble side helps to rejuvenate the plant.

关 键 词：沙冬青 平茬复壮技术 生长量 

分 类 号：S793.9[农业科学—林木遗传育种]