藏北高寒退化草地免耕补播效果研究  

Study on the Effect of No-tillage Reseeding in Alpine Degraded Grassland of Amdo County in Northern Tibet

作　　者：孙磊 格桑拉姆 王向涛 魏学红 SUN Lei;Gesang Lamu;Wang Xiangtao;WEI Xue-hong(Animal Science College,Tibet Agriculture ＆ Animal Husbandry University,NyingchL 860000 China)

机构地区：[1]西藏农牧学院动物科学学院 [2]西藏农牧学院科研处,西藏林芝860000

出　　处：《高原农业》2018年第2期162-166,117,共6页Journal of Plateau Agriculture

基　　金：教育部人文社会科学研究规划基金项目(14YJA850010);雪域英才项目(2015XYD04);厅校联合基金(2016ZR-NY-09)

摘　　要：在西藏那曲地区安多县高寒退化草地采用细茎冰草(Agpoyron trachyeaulun L.)、垂穗披碱草(Elymus nutans Griseb.)、无芒雀麦(Bromus inermis Leyss)和冷地早熟禾(Poa crymophila Keng)4种牧草进行免耕补播研究。结果表明:经过免耕补播后,草地植物在高度、盖度、产量方面均有不同程度的提高,植物多样性有所增加;高寒退化草地进行免耕补播可有效改良天然退化草地。Agpoyron trachyeaulun L.,Elymus nutans Griseb,Bromus inermis Layss and Poa crymophila Keng were reseeded in fenced areas using no-tillage reseeding method, and the vegetation height,coverage and grass yield were studied in a typical degraded meadow of Amdo Naqu, Tibet. The results showed that the vegetation heigh,coverage and grass yield were improved after no-tillage reseeding and plant diversities increased slightly, and no-tillage reseeding can effectly improve naturally degenerated alpine grassland.

关 键 词：安多 高寒草地 退化 免耕补播 改良效果 

分 类 号：S812.4[农业科学—草业科学]