摘要
以内蒙古典型草原割草地为研究对象,研究不同刈割制度对羊草功能性状的影响。试验选自2001-2015连续14年进行不同频率割草试验的样地,选取羊草种群,在生物量高峰期8月中旬刈割前进行调查。选取羊草的植株高度、叶数、叶下茎高等10个功能性状进行测量。结果显示,经过14年的刈割处理,羊草种群植株高度、叶下茎高、叶子的长度、叶数、地上鲜重、叶干重、叶面积等功能性状随着刈割频率的增加呈显著降低趋势;而羊草的比叶面积、比叶重差异性不显著;刈割频率对羊草所有叶子角度（叶片与茎的夹角）之和并无影响,但是影响单片叶子的角度,第2-5片叶子的角度,随着刈割次数的增加表现出显著减小趋势。
The impact of different cutting systems on functional diversity of L.chinensis was studied in Inner Mongolia typical steppe in 2002-2015for 14 years in biomass peak before mid-August,The plant height,leaf number,stem height,leaf length,fresh weight above ground,leaf dry weight,leaf area,specific leaf area,specific leaf weight and leaf angle of L.chinensis were investigated.The results showed that plant height,leaf number,stem height,leaf length,fresh weight above ground,leaf dry weight and leaf area were decreased with increasing cutting frequency.There were no significant difference in specific leaf area and specific leaf weigh.Besides,cutting frequency had no effect on the total leaf angle.But the frequency of cutting impacted single leaf angle.With the increase of cutting frequency,leaf angle of 2to 5leves decreased gradually,but the first leaf angle did not change significantly.
作者
徐慧敏
白天晓
安娜
时光
赵一安
宝音陶格涛
XU Hui-min BAI Tian-xiao AN Na SHI Guang ZHAO Yi-an Baoyin Taogetao(College of Life Science, Inner Mongolia University, Hohhot 010021, China)
出处
《中国草地学报》
CSCD
北大核心
2016年第6期60-65,共6页
Chinese Journal of Grassland
基金
公益性行业(农业)科研专项(20130306)
国家重点基础研究发展计划"973"项目(2014CB138805)
现代农业产业技术体系建设专项资金(CARS-35)
关键词
割草制度
刈割次数
功能多样性
羊草
Cutting system
Cutting frequency
Functional diversity
L.chinensis
