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高寒山区混播草地燕麦和毛苕子种间的竞争关系
引用本文:盛亚萍,赵成章,高福元,张军霞,石福习,屈勇.高寒山区混播草地燕麦和毛苕子种间的竞争关系[J].生态学杂志,2011,30(11).
作者姓名:盛亚萍  赵成章  高福元  张军霞  石福习  屈勇
作者单位:1. 西北师范大学地理与环境科学学院,兰州,730070
2. 甘肃省肃南县草原站,甘肃肃南,734400
基金项目:国家自然科学基金项目(40971039); 甘肃省科技支撑计划项目(1011FKCA157); 甘肃省高校基本科研业务费项目资助
摘    要:植物通过调整生长发育阶段的生长行为和形态特征来适应种间竞争关系的变化.在祁连山区建立了禾本科牧草燕麦与豆科毛苕子混播草地,以相对产量(RY)、相对密度(RD)和相对产量总值(RYT)为指标,研究了这2种1年生植物在不同物候期的种间竞争关系.结果表明:随着物候期的变化,种间竞争关系发生着动态变化,在出苗期,二者存在激烈的种间竞争,2个物种限制彼此相对数量的发展,株高、叶片数等增长缓慢;分蘖期,种间竞争转换为种间协作,分蘖数、叶片数等迅速增大,相对产量总值不断积累;进入拔节期,毛苕子开始扩大相对数量,限制了燕麦的生长,导致了激烈的种内竞争;到结实期,种内竞争再次转化为种间竞争.不同物候期的燕麦和毛苕子通过对植物形态可塑性的调整,更好地响应了种间竞争关系的转换.

关 键 词:混播牧草地  种间竞争  1年生植物  祁连山区

lnterspecific competition between Avena sativa and Vicia vilosa in mixed sowing grassland in alpine mountainous region
SHENG Ya-ping,ZHAO Cheng-zhang,GAO Fu-yuan,ZHANG Jun-xia,SHI Fu-xi,QU Yong.lnterspecific competition between Avena sativa and Vicia vilosa in mixed sowing grassland in alpine mountainous region[J].Chinese Journal of Ecology,2011,30(11).
Authors:SHENG Ya-ping  ZHAO Cheng-zhang  GAO Fu-yuan  ZHANG Jun-xia  SHI Fu-xi  QU Yong
Institution:SHENG Ya-ping1,ZHAO Cheng-zhang1**,GAO Fu-yuan1,ZHANG Jun-xia1,SHI Fu-xi1,QU Yong2(1College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China,2 Grassland Station of Sunan County,Sunan 734400,Ganshu,China)
Abstract:Plants can adapt to interspecific competition by adjusting their growth behaviors and morphological characteristics at their different growth stages.In this study,a grassland with mixed sowing Avena sativa and Vicia vilosa was established in Qilian mountainous region,aimed to understand the interspecific competitive relationships of the two annual species at their different phonological phases.To evaluate the competitive relationships,the relative yield(RY),relative density(RD),and relative yield total(RYT)...
Keywords:mixed sowing grassland  interspecific competition  annual plant  Qilian mountainous region    
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