两种黄芪属植物的根瘤特性比较及与土壤因子关系研究

doi:10.11733/j.issn.1007-0435.2023.07.029

草地学报 ›› 2023, Vol. 31 ›› Issue (7): 2177-2185.DOI: 10.11733/j.issn.1007-0435.2023.07.029

两种黄芪属植物的根瘤特性比较及与土壤因子关系研究

依里帆·艾克拜尔江^1,2, 李进¹, 李慧³, 庄伟伟¹

1. 新疆师范大学生命科学学院新疆特殊环境物种多样性应用与调控重点实验室, 新疆乌鲁木齐 830054;
2. 新疆西天山国家级自然保护区管理局, 新疆伊宁 835000;
3. 新疆维吾尔自治区矿产实验研究所, 新疆乌鲁木齐 830000

收稿日期:2022-12-02 修回日期:2023-02-24 出版日期:2023-07-15 发布日期:2023-08-01
通讯作者: 庄伟伟,E-mail:zww8611@sina.com
作者简介:依里帆·艾克拜尔江(1998-),男,维吾尔族,新疆伊宁人,硕士研究生,主要从事植物生理生态研究,E-mail:2293323651@qq.com
基金资助:
新疆维吾尔自治区重点实验室开放课题(2021D04003);国家自然科学基金项目(42007092);新疆维吾尔自治区自然科学基金面上项目(2021D01A123)资助

Comparison of Nodule Characteristics of Two Astragalus Species and Their Relationship with Soil Factors

Erfan AKBERJAN^1,2, LI Jin¹, LI Hui³, ZHUANG Wei-wei¹

1. Key Laboratory of Special Environment Biodiversity Application and Regulation in College of Life Science, College of Life Science, Xinjiang Normal University, Urumqi, Xinjiang 830054, China;
2. Xinjiang Administration of West Tianshan National Nature Reserve, Yining, Xinjiang 835000, China;
3. Xinjiang Research Institute of Mineral Resources, Urumqi, Xinjiang 830000, China

Received:2022-12-02 Revised:2023-02-24 Online:2023-07-15 Published:2023-08-01

摘要/Abstract

摘要： 豆科植物在氮素匮乏的荒漠生态系统中大量存在，也是这一区域的先锋物种。本研究选择古尔班通古特沙漠广泛分布的弯花黄芪(Astragalus flexus)和镰荚黄芪(Astragalus arpilobus)的根瘤为对象，研究两种植物在不同生长期的根瘤固氮酶活性(Nodule nitrogenase activity，NNA)、根瘤固氮潜力(Nodule nitrogen fixation potential，NNFP)、根瘤重量(Weight of nodule，WON)及土壤因子关系。结果表明：两种植物在不同生长期的NNA，NNFP，WON均存在显著性差异(P＜0.05)，且在6月上旬均达到最高。在5月上旬，电导率(EC)、全磷(TP)分别是弯花黄芪NNA，NNFP的促进因子，而有机质(SOM)是两种植物NNFP及弯花黄芪WON的限制因子；在5月下旬，全氮(TN)是镰荚黄芪NNFP的限制因子；有机碳(SOC)和TN分别是6月上、下旬镰荚黄芪NNA的限制因子。结果为新疆干旱区对高效利用黄芪属植物及通过调控土壤因子来提高共生固氮提供了借鉴。

关键词: 弯花黄芪, 镰荚黄芪, 根瘤固氮酶活性, 根瘤固氮潜力, 根瘤重量, 土壤因子

Abstract: Legumes are abundant in nitrogen-deficient temperate desert ecosystems and are important pioneer species in this desert region,providing a center of available nitrogen to other plant species coexisted in the vegetation. In this study,the root nodules of Astragalus flexus and Astragalus arpilobus,which are widely distributed in the Gurbantunggut Desert,were selected and sampled four times during their growth season to study the changes of the nodule nitrogenase activity (NNA),nitrogen-fixing Potential nodules (NNFP),weight of nodules (WON) and the relationships of two Astragalus species with the soil factors in different growing periods. The results showed that (1) the NNA,NNFP,and WON of both species were significantly different (P<0.05) in different growth phases,and reached the highest values in early June. In early May,electrical conductivity (EC) and total phosphorus (TP) were the main promoting factors for NNA and NNFP of Astragalus flexus,respectively,while soil organic matter (SOM) was the main limiting factor for NNFP of both species and for WON of Astragalus flexus. In late May,total nitrogen (TN) was the main limiting factor for NNFP of Astragalus arpilobus;The soil organic carbon (SOC) was the main limiting factor for NNA of Astragalus arpilobus in early June and the total nitrogen (TN) for NNA of Astragalus arpilobus in late June. The results of this study may provide an implications for the exploring the Astragalus plants for efficient symbiotic nitrogen fixation,as well as for the enhancement of symbiotic nitrogen fixation through the regulation of soil factors in the arid zone of Xinjiang.

Key words: Astragalus flexus, Astragalus arpilobus, Nodule nitrogen activity, Nodule nitrogen fixation potential, Weight of nodules, Soil factor

中图分类号:

S153.6

依里帆·艾克拜尔江, 李进, 李慧, 庄伟伟. 两种黄芪属植物的根瘤特性比较及与土壤因子关系研究[J]. 草地学报, 2023, 31(7): 2177-2185.

Erfan AKBERJAN, LI Jin, LI Hui, ZHUANG Wei-wei. Comparison of Nodule Characteristics of Two Astragalus Species and Their Relationship with Soil Factors[J]. Acta Agrestia Sinica, 2023, 31(7): 2177-2185.

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两种黄芪属植物的根瘤特性比较及与土壤因子关系研究

Comparison of Nodule Characteristics of Two Astragalus Species and Their Relationship with Soil Factors

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