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酸刺(Hippophae rhamnoides L.)又名沙棘、醋柳、黑刺等。为胡颓子科,沙棘属之落叶小乔木或灌木。适应性强,耐寒、耐旱、耐盐碱、耐瘠薄,在黄土高原分布广,是天然灌丛的优势种。同时酸刺生长成林快(3—4年即可郁闭成林),繁殖容易,根系发达,萌蘖力强,一般3—4年可产生根蘖苗,5年根幅可达10余米;是防冲、固岸、护坡、保持水土的优良树种,也是营造乔木林的先锋树种。在黄土高原大部分地区林木被破坏殆尽,水土流失严重,土壤干旱,要自然恢复原来的森林、灌丛是要相当的时间。为加快黄土高原绿化速度,从1975—1979年我们进行了酸刺飞播试验。
Acid thorns (Hippophae rhamnoides L.), also known as seabuckthorn, vinegar willow, black thorn and so on. For Elaeagus family, seabuckthorn leaves small trees or shrubs. Adaptable, cold, drought, salt, barren, widely distributed in the Loess Plateau, is the dominant species of native shrubs. At the same time, the growth of Acanthopanacis thuringiensis forest fast (3-4 years can be closed forest), easy propagation, developed root system, strong sprouting, generally 3-4 years can produce root tillering seedlings, 5 years of root up to more than 10 Rice; is anti-red, solid shore, slope protection, soil and water conservation excellent tree species, but also to create a pioneering tree species of arborvitae. In most parts of the Loess Plateau, the trees have been destroyed, the soil and water loss are serious and the soil is droughty. It is quite a time to naturally restore the original forest and shrub. To speed up the greening of the Loess Plateau, from 1975 to 1979 we carried out the sour sowing test.