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在西藏雅鲁藏布江滩地进行多树种抗旱固沙造林试验。结果表明,优胜杨成活率最高,为83%,其次为新疆杨(52%)、柳树插干(33%)、带根柳树(32%)、北京杨(28%);柳树插干在流水低洼地造林成活率显著高于季节性积水低洼地;沙生槐雨季直播固沙造林效果较好,亩均出苗量可达346棵,当年平均苗高2.8cm。指出西藏雅鲁藏布江干旱河谷地区影响造林成活的关键因子是苗木栽植深度,其次为苗木质量。对如何加快“一江两河”地区造林绿化进度和质量提出了一些建议。
Multi-species drought-resistant and sandy-fixation afforestation experiment in the Brahmaputra beach in Tibet. The results showed that the survival rate of Yusheng Yang was highest at 83%, followed by Xinjiang Yang (52%), Willow Trunk (33%), Willow (32%) and Beijing Yang (28% The survival rate of afforestation in low-lying land was significantly higher than that in seasonal low water depressions. The direct seeding and afforestation of Shashenhuayi was better, with 346 acres of seedlings per mu. The average seedling height was 2.8 cm. Pointed out that the key factors affecting the survival of the Brahmaputra Valley in Tibet are seedling planting depth, followed by seedling quality. Put forward some suggestions on how to speed up the progress and quality of afforestation in the “one river and two rivers” area.