摘要
在黄土高原高塬沟壑区用中国沙棘、多年生香豌豆与从国外引进的刺槐、绒毛白蜡和黑核桃等乔木树种进行不同类型的复合试验,研究结果表明:幼龄期(1-4a)各种复合类型由于植物之间的有益共生,特别是中国沙棘、多年生香豌豆的固氮作用,可以很好地促进主栽乔木树种的高、径生长及生物量的积累;同时用于混交的中国沙棘,自身生长量也较其纯林有所增加。适宜的乔灌混交,可以实现“双赢”的目标。
For the behavior of introduced foreign arbor trees like Robinia pseudoacacia, Fraxinus velutina , Juglans nigra , mixed with Hippophae rhamnoides ssp sinensis, Lathyrus lati folius respectively, to form mixed types, the field test was carried out in the tableland and gully district of the Loess Plateau. The results showed that, the arbor trees of mixed types in young growth period have good increment including height, diameter compared with the pure stand, due to the nitrogen fixation from seabuckthorn, perennial sweet pea, and the growth of seabuckthorn is higher in mixed stand than in pure stand itself. The suitable mixed types of arbor and shrub are useful both for the growth of arbors and shrubs.
关键词
中国沙棘
复合方式
生长量
黄土高塬沟壑区
Hippophae rhamnoides ssp. sinensis
mixed types
increment
tableland and gully district of the Loess Plateau
