| 补播和施肥对藏北高寒退化草地的改良效果 |
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| 引用本文： | 魏学红,杨富裕,孙磊.补播和施肥对藏北高寒退化草地的改良效果[J].安徽农业科学,2010,38(32):18155-18156. |
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| 作者姓名： | 魏学红 杨富裕 孙磊 |
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| 作者单位： | 西藏农牧学院牧医系,西藏林芝,860000;中国农业大学草地研究所,北京,100094 |
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| 基金项目： | 国家自然科学基金项目(30260073); 国家科技支撑计划项目(2004BA651C,2007BAC06B01)资助 |
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| 摘 要： | 目的]探讨补播及施肥对高寒退化草地的改良效果,改善草地生态环境。方法]采用细茎冰草、垂穗披碱草、无芒雀麦和冷地早熟禾4种牧草进行补播,并采用牛羊粪施肥对草地进行改良试验,测定其牧草高度、盖度和鲜草产量的变化。结果]在补播区,2003年牧草长势良好,改良效果十分明显,其中平均高度、盖度和鲜草产量增幅较大的是垂穗披碱草区和无芒雀麦区,经过1个冬天的生长,2004年牧草的平均盖度和鲜草产量明显降低;在施肥区,2003年植被盖度比对照区提高26%,2004年植被盖度较2003年又提高14%,并且鲜草产量上升较快,增幅达到20 g/m2。结论]采用围栏、补播、施肥、灌溉和管理等综合措施,可有效改良天然退化草地。
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| 关 键 词： | 退化草地 补播 施肥 改良效果 藏北 |
Effects of Reseeding and Fertilization on the Vegetation Recovery of Degraded Grassland in North Tibet |
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| WEI Xue-hong et al.Effects of Reseeding and Fertilization on the Vegetation Recovery of Degraded Grassland in North Tibet[J].Journal of Anhui Agricultural Sciences,2010,38(32):18155-18156. |
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| Authors: | WEI Xue-hong |
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| Institution: | WEI Xue-hong et al (Department of Animal Husb,ry , Veterinarian,Tibet Agriculture , Animal Husb,ry College,Linzhi,Tibet 860000) |
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| Abstract: | Objective] To investigate the effects of reseeding and fertilization on the vegetation recovery of degraded grassland so as to improve the grassland ecological environment.Method] A total of 4 forage grass including Agpoyron trachyeaulun L.,Elymus dahuricus Griseb,Bromus inermis Leyss and Poa crymophila Keng were used for reseeding,and the cattle and sheep manure fertilizer were used for improving grassland.Grass height,coverage and fresh grass amount were determined in 2003-2004.Result] In reseeding are... |
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| Keywords: | Degraded grassland Reseeding Fertilization Improvement effect North Tibet |
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