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在沙漠化草地植被恢复过程中,播种的耐旱植物幼苗成活率较低成为一个重要的瓶颈问题。为了提高耐旱植物幼苗在沙地生境的成活率,本研究通过群落调查方法,对沙地播种根茎冰草幼苗的高度、多度、盖度及生物量等指标进行评价,以筛选出沙地种植根茎冰草的最优幼苗保育方案。结果表明,幼苗保育措施中,种子丸衣化技术最有利于幼苗的生长,其次是施肥,而液体地膜覆盖则对幼苗生长无显著影响;在沙地播种耐旱植物栽培技术中,行距为50cm,播种量为45(kg/hm2)的W6播种组合最有利于幼苗的生长;春季播种的根茎冰草幼苗的多度和高度显著高于夏季和秋季播种。
During the restoration of desertified grassland, the survival rate of seeding drought-tolerant seedlings has become an important bottleneck problem. In order to improve the survival rate of drought-tolerant seedlings in sandy habitat, this study evaluated the index of height, abundance, coverage and biomass of seedlings of rhizosphere grass and grass in sandy land by using community investigation method, Optimum seedling planted with rhizome grass. The results showed that in the seedling conservation measures, the technology of seeds and pellets was most beneficial to the growth of seedlings, followed by fertilization, while the liquid plastic film mulching had no significant effect on the seedling growth. In sand cultivation of drought-tolerant plants, the spacing was 50cm , And the seeding rate of 45 (kg / hm2) was the most suitable for the seedling growth. The seedlings of the seedlings of the rhizome grass planted in spring were significantly higher than those of the summer and autumn seeding.