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中国农学通报

中国农学通报 ›› 2024, Vol. 40 ›› Issue (34): 42-49.doi: 10.11924/j.issn.1000-6850.casb2023-0896

• 林学·园艺·园林 • 上一篇    下一篇

陕北毛乌素沙地柳枝稷生长特性研究

杨航1(), 李懿轩1, 李强1,2(), 刘小铭1, 杨涛3, 罗竹梅3, 刘江涛4   

  1. 1 榆林学院/陕西省陕北矿区生态修复重点实验室，陕西榆林 719000
    2 榆林市固废资源化利用工程技术研究中心，陕西榆林 719000
    3 陕西省林业科学研究院，陕西榆林 719000
    4 榆林环境保护工程有限责任公司，陕西榆林 719000
  • 收稿日期:2023-12-27 修回日期:2024-08-02 出版日期:2024-12-05 发布日期:2024-12-03
  • 通讯作者:
    李强，男，1986年出生，陕西子洲人，教授，博士，主要从事固废协同矿山生态修复研究。通信地址：719000 陕西省榆林市榆阳区崇文路51号 榆林学院，Tel：0912-3893644，E-mail：。
  • 作者简介:

    杨航，男，1998年出生，陕西渭南人，硕士研究生，研究方向：固废生态农业利用研究。通信地址：719000 陕西省榆林市榆阳区崇文路51号 榆林学院，Tel：0912-3893644，E-mail：。

  • 基金资助:
    陕西省特支计划人才项目“固废改性修复矿区环境研究”(2022TZRC04); 陕西省教育厅创新团队(2023-63)

Growth Characteristics of Switchgrass in Mu Us Sandy Land of Northern Shaanxi

YANG Hang1(), LI Yixuan1, LI Qiang1,2(), LIU Xiaoming1, YANG Tao3, LUO Zhumei3, LIU Jiangtao4   

  1. 1 Key Laboratory of Ecological Restoration in Shaanxi North Mining Area/ Yulin University, Yulin, Shaanxi 719000
    2 Yulin Solid Waste Resource Utilization Engineering Technology Research Center, Yulin, Shaanxi 719000
    3 Shaanxi Academy of Forestry Sciences, Yulin, Shaanxi 719000
    4 Yulin Environmental Protection Engineering Co., Ltd., Yulin, Shaanxi 719000
  • Received:2023-12-27 Revised:2024-08-02 Published:2024-12-05 Online:2024-12-03

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摘要：

探索柳枝稷在陕北毛乌素沙地的引种适应性，旨在为陕北毛乌素沙地筛选柳枝稷品种提供科学依据。通过观测12个柳枝稷品种的农艺性状（株高、分蘖数、叶面积、生物量、出苗率）、生理特性（蒸腾速率、净光合速率）及土壤物理性质（含水率、容重、孔隙度），采取主成分分析法，建立综合评价体系，对柳枝稷的适应性进行综合评价。结果显示，12种柳枝稷的株高、分蘖数、叶面积、生物量、出苗率等指标存在显著差异；YM-9的株高与叶面积分别为115 cm和59.20 cm2，YM-2的分蘖数为93，YM-6的生物量为153.98 g/cm2，YM-5的出苗率为48.50%，上述品种指标显著优于其他品种。土壤容重与株高、土壤孔隙度间呈显著负相关关系，相关系数达到0.65以上；产量与出苗率呈极显著正相关关系，相关系数达0.82；产量与生物量呈显著正相关关系，相关系数达0.63；植物叶片的蒸腾速率与净光合速率呈极显著正相关关系，相关系数达0.88。综合比较，YM-2的综合得分最高(1.144)，为12个品种中最适宜在陕北毛乌素沙地规模化推广种植的柳枝稷品种。

关键词: 毛乌素沙地, 柳枝稷, 品种筛选, 引种, 环境适应性

Abstract:

The adaptability evaluation of switchgrass (Panicum virgatum) was assessed to establish a foundation for selecting switchgrass varieties in the Mu Us Sandy Land of northern Shaanxi. A comprehensive evaluation system was established by observing the agronomic traits (plant height, tiller number, leaf area, biomass, seedling emergence rate), physiological characteristics (transpiration rate, net photosynthetic rate), and soil physical properties (water content, bulk weight, porosity) of 12 switchgrass varieties. This system adopted the principal component analysis method to assess the adaptability of switchgrass. There were significant differences in the indicators of plant height, number of tillers, leaf area, biomass and seedling emergence rate among the 12 species of switchgrass. Specifically, the plant height and leaf area of YM-9 were 115 cm and 59.20 cm2, respectively, the number of tillers of YM-2 was 93, the biomass of YM-6 was 153.98 g/cm2, and the seedling emergence rate of YM-5 was 48.50%. These varieties showed significantly superior indicators compared to the other varieties. The following correlations were observed. A significant negative correlation between soil bulk weight and plant height and soil porosity, with a correlation coefficient over 0.65; a highly significant positive correlation between yield and seedling emergence rate, with a correlation coefficient of 0.82; a significant positive correlation between yield and biomass, with a correlation coefficient of 0.63; and a highly significant positive correlation between transpiration rate of plant leaves and net photosynthetic rate, with a correlation coefficient of 0.88. YM-2 achieved the highest composite score (1.144) and was identified as most suitable switchgrass variety for large-scale cultivation in the Mu Us Sandy Land of northern Shaanxi among the 12 switchgrass varieties.

Key words: Mu Us Sandy Land, switchgrass, variety screening, introduction, environmental adaptation