摘要
砒砂岩区为中国自然生态环境最为恶劣的地区之一。多年来的科学研究和生产实践均证明，沙棘为适应这一地区的最佳先锋植物。2～8a沙棘定植株的平均高、地径分别与萌蘖株高、冠幅间存在着较好的正相关关系；中等盖度（40％～70％）的沙棘人工林分，其萌蘖能力最高。生产实践中可充分利用沙棘萌蘖性能强的优势，有效降低种植密度，减少种植成本，实现砒砂岩区快速、经济、高效恢复植被的目的。
Soft sandstone area is one of the worst natural ecological environment areas in China. Many years＇ scientific researches and production practices have proved that seabuckthorn is the most proper pioneer plant in the area. The average height and diameter of 2-8 years＇ planted seabuckthorn have a positive correlativity with the average height and canopy width of sprouting. In medium seabuckthorn coverage （40%-70%）, the sprouting ability appears to be the highest; whereas it drops rapidly for the coverage which is higher than 70% or lower than 40%. Thereby the sprouting ability can be used in the rehabilitation practice in order to reduce the original plantation density effectively, and seedling and planting costs as well, and restore the vegetation rapidly, economically, and effectively in the area.
基金
晋陕蒙砒砂岩区沙棘生态工程(水规计[1998]111号)。
关键词
砒砂岩
沙棘
定植株
萌蘖株
生长指标
soft sandstone
seabuckthorn
planting
sprouting
growth index
