---

作 者 ：申时才,徐高峰,李天林，张付斗 *,张玉华

期 刊 ：西北植物学报 2012年 1期 页码：173~179

关键词：补偿反应；形态可塑性；入侵植物；对比研究；

Keywords:compensatory response, morphological plasticity, invasive plants, comparative study,

摘 要 ：通过模拟刈割试验，研究了5种外来入侵植物（黑麦草、空心莲子草、三叶鬼针草、薇甘菊和胜红蓟）的补偿能力及其形态可塑性。结果表明：多数植物的补偿能力与形态可塑性有一定相关性，刈割和非刈割条件下空心莲子草和薇甘菊都具有较强的形态可塑性，其补偿指数较高，分别为1.65和1.27；多年生黑麦草和三叶鬼针草的形态可塑性在刈割条件下得到增强，补偿指数分别为1.44和1.28；刈割条件下胜红蓟的形态可塑性变化不大或有所降低，其补偿指数最低，为0.82。研究认为，5种植物具有不同的限制其形态可塑性和补偿能力比较理想的刈割时期，薇甘菊攀援生长方式下为30 d前和60 d后，空心莲子草为60 d后，胜红蓟为40～50 d，鬼针草为30 d前，黑麦草为40～50 d。

Abstract:With simulated mowing experiments,the compensation capacity and morphological characteristics of five invasive plant species were studies in greenhouse.The results showed that there were some definite correlations between their compensation capacity and morphological plasticity for most test species.With stronger morphological plasticity under both of mowing and non-mowing,Alternanthera philoxeroides and Mikania micrantha had higher compensation capacity,with their compensation index being 1.65 and 1.27,respectively.The morphological plasticity of Lolium perenne and Bidens pilosa was increased by mowing,thus their compensation capacity was also higher,the compensation index being 1.44 and 1.28,respectively.Ageratum conyzoides had the lowest compensation plasticity because its morphological plasticity was not changed or contrarily reduced by mowing.There were some better mowing periods to suppress morphological plasticity and compensation capacity of five invasive plants growing,which Mikania micrantha with climbing growth,Alternanthera philoxeroides,Ageratum conyzoides,Bidens pilosa and Lolium perenne were before 30 d and after 60 d,after 60 d,40～50 d,before 30 d and 40～50 d,respectively.

---