植物学报 ›› 2015, Vol. 50 ›› Issue (1): 83-89.DOI: 10.3724/SP.J.1259.2015.00083

• 研究报告 • 上一篇    下一篇

集群栽培对棉花种内关系的影响

解婷婷1,*(), 苏培玺2, 周紫鹃2, 单立山3, 李善家2   

  1. 1中国科学院寒区旱区环境与工程研究所, 临泽内陆河流域研究站/内陆河流域生态水文重点实验室, 兰州 730000
    2中国科学院寒区旱区环境与工程研究所, 临泽内陆河流域研究站/寒旱区陆面过程与气候变化重点实验室, 兰州 730000
    3甘肃农业大学林学院, 兰州 730070
  • 收稿日期:2013-12-02 接受日期:2014-04-03 出版日期:2015-01-01 发布日期:2015-04-09
  • 通讯作者: 解婷婷
  • 作者简介:

    ? 共同第一作者

  • 基金资助:
    国家自然科学基金(No.31300323, No.91325104)和中国科学院寒区旱区环境与工程研究所青年人才基金(No.Y251A91001)

Effect of Cluster Planting Pattern on Intraspecific Interactions of Cotton

Tingting Xie1, *, Peixi Su2, Zijuan Zhou2, Lishan Shan3, Shanjia Li2   

  1. 1Linze Inland River Basin Research Station/Key Laboratory of Ecohydrology and Integrated River Basin Science, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
    2Linze Inland River Basin Research Station/Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
    3College of Forestry, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2013-12-02 Accepted:2014-04-03 Online:2015-01-01 Published:2015-04-09
  • Contact: Xie Tingting
  • About author:

    ? These authors contributed equally to this paper

摘要: 为了检验假说“1穴3株集群栽培方式改变了棉花(Gossypium hirsutum)的种内关系, 从而使得经济产量显著提高”, 通过分析在集群和传统栽培方式下棉花各器官的生长特性, 阐明集群栽培下不同穴距对棉花种内关系的影响。结果表明, 与传统1穴1株种植相比, 集群栽培方式下随着穴距的减小, 棉花的茎秆生长显著降低, 在穴距为28 cm时, 叶片生物量最大且籽棉产量最高。进一步分析相对邻体效应(RNE), 发现穴距对棉花茎秆、叶片和籽棉产量的RNE影响都极为显著; 同时, 随着穴距的减小, 茎秆RNE值呈先升高后降低趋势, 且均为负值, 负效应强度在穴距为28 cm时最小。叶片和籽棉产量的RNE值均为正值, 且在穴距为28 cm时正效应强度最大。上述研究结果表明, 集群栽培改变了棉花的种内关系, 且在穴距为28 cm时, 对棉花籽棉产量的助长作用最大。

Abstract: We aimed to investigate the effect of a cluster-planting pattern on intraspecific interactions and test whether cluster planting can modify the type and intensity of intraspecific interactions, thus increasing yield. The growth characteristics of different organs of cotton under cluster and traditional planting patterns were studied and the effect of different hole distances on intraspecific interactions were analyzed. As compared with the traditional planting pattern of one plant in a hole, with cluster planting, the stem growth was reduced significantly, along with decreased hole distance, but the leaf growth and yield was highest with 28 cm hole distance. Moreover, different hole distances significantly affected the relative neighbor effect (RNE): the stem RNE increased then decreased with decreasing hole distance, but the values were all negative and the intensity of the negative effect was minimal with the 28 cm hole distance. Leaf and yield RNE were posi- tive and the intensity of the positive effect was maximal with the 28 cm hole distance. Cluster planting may effect intraspecific interactions. This facilitation is maximal for yield of cotton with the 28 cm hole distance.