甘肃马先蒿对“黑土型”退化草地垂穗披碱草人工草地的影响  

Influence of Pedicularis kansuensis on Elymus nutans artificial grassland in "Black Soil Type": degenerated alpine grassland

作　　者：邱正强[1] 马玉寿[1] 施建军[2] 潘多峰[1] 李瑞江[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]青海省畜牧兽医科学院,青海西宁810003

出　　处：《草原与草坪》2006年第5期26-29,共4页Grassland and Turf

基　　金：国家"十.五"攻关项目(编号2001BA606A-02)

摘　　要：对三江源区“黑土型”退化草地上改建的6年龄垂穗披碱草人工植被中的毒杂草进行了防除试验,分析了甘肃马先蒿的侵入及其对垂穗披碱草人工草地的影响。结果表明,甘肃马先蒿的侵入,严重降低了垂穗披碱草的盖度和密度,使其生物量降低了75%;当甘肃马先蒿侵入使垂穗披碱草的覆盖度≤70%时,给其他更多的物种造成发展空间,群落物种数量开始增加;采用化学防除可控制甘肃马先蒿的侵入和扩散,并维持垂穗披碱草人工草地的质量。The invasive and influence of Pedicularis kansuensis on Elymus nutans artificial grassland in ＂Black Soil Type＂in the headwater area of the Yangtze and Yellow Rivers on Qinghai-Tibetan Plateau were studied and the result indicated that ： （1） the invasion of Pedicularis kansuensis seriously reduced the coverage and density of Elymus nutans ,and reduce the phytomass by nearly 75% ; （2） while the coverage of Elymus nutans was reduced below 70% by the invasive of Pedicularis kansuensis, the number of other species increased due to more resource and space were given to then; （3）the quality of Elymus nutans artificial grassland could be maintained through controlling Pedicularis kansuensis with herbicide.

关 键 词：“黑土型”退化草地 垂穗披碱草 甘肃马先蒿 人工草地 毒杂草防除 

分 类 号：S812[农业科学—草业科学]