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uv-b fu she dui duo nian sheng mu cao zhong qun jie gou de ying xiang
Author(s): 
Pages: 86-89
Year: Issue:  8
Journal: Heilongjiang Animal Science and Veterinary Medicine

Abstract: 为了研究UV-B辐射对多年生牧草群体结构的影响及辐射使牧草产生改变的程度,对3种禾本科牧草--中华羊茅、冷地早熟禾和垂穗披碱草进行了紫外辐射试验.结果表明:UV-B辐射增强能强烈地影响牧草群体结构,缩小单株叶面积,使群体LAI下降,叶面积垂直分布也发生变化,而且牧草群体对UV-B辐射及总辐射的反射与吸收也发生显著变化.群体对UV-B辐射增加的适应性调节使群体对UV-B辐射增加的反射增大,吸收大大减...
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