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农学学报

农学学报 ›› 2016, Vol. 6 ›› Issue (7): 24-29.doi: 10.11923/j.issn.2095-4050.cjas15120010

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

栽培甘草对盐碱地土壤理化性质及微生物功能多样性的影响

吴振振,张旭龙,马 淼   

  1. 石河子大学生命科学学院,石河子大学生命科学学院,石河子大学生命科学学院
  • 收稿日期:2015-12-16 修回日期:2016-01-13 接受日期:2016-01-25 出版日期:2016-07-18 发布日期:2016-07-18
  • 通讯作者: 马 淼 E-mail:3025924470@qq.com
  • 基金资助:
    国家自然科学基金项目“高盐环境下乌拉尔甘草叶片气孔泌盐与光合气体交换的利益冲突与权衡策略的研究”(31360047)；石河子大学重大科技攻关项目“高盐环境下乌拉尔甘草叶片气孔泌盐与光合气体交换的利益冲突与权衡策略的研究”(gxjs2012-zdgg06)。

Effects of licorice planting on physical , chemical and biological properties of saline soil

  • Received:2015-12-16 Revised:2016-01-13 Accepted:2016-01-25 Online:2016-07-18 Published:2016-07-18

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摘要： 为探讨在盐碱地区种植甘草对土壤理化性质及微生物功能多样性的影响。本文以未种植胀果甘草的裸地(CK)为对照，测定土壤的理化性质，并采用BilogECO微平板技术研究了人工栽培甘草对盐碱地微生物功能多样性的影响。研究结果表明：与裸地(CK)相比，种植甘草能显著提高盐碱土中全氮、碱解氮及有机质等养分的含量（P＜0.05），其含量分别比裸地(CK)增加了38%、48%和33%，且土壤的电导率值与裸地(CK)相比降低了262%，达到显著水平（P＜0.05）。甘草样地的AWCD值（反应土壤微生物活性）显著高于裸地(CK)，在培养72 h后甘草样地的AWCD值比裸地(CK)显著增加了28%（P＜0.05）。甘草样地中土壤微生物对糖类碳源的利用率与对照相比增加28%（P＜0.05），其土壤微生物多样性亦显著高于裸地(CK)（P＜0.05）。主成分分析表明，种植甘草后改变了土壤微生物的群落组成，导致此种差异的主要碳源为糖类和氨基酸类，其次是羟酸类及多聚物类。综上所述，在盐碱地种植甘草有利于提高土壤微生物代谢活性和土壤微生物群落功能多样性，因此人工栽培甘草是盐碱地生态恢复的一项有效措施。 关键词：胀果甘草；盐碱地；土壤微生物；群落功能多样性

关键词: 小麦, 小麦, 农艺性状, 相关分析, 多重比较分析, 聚类分析

Abstract: The study aimed to investigate the effect of planting licorice on physical and chemical properties and microbial community functional diversity in saline soil. In this study bare land(no planting Glycyrrhiza inflate ) were set as control, using conventional methods, an experiment was conducted to investigate the changes of planting licorice on soil physical-chemical properties. Soil microbial community functional diversity was studied using Biolog plates. Results showed that compared with control, the contents of total nitrogen, alkalystic nitrigen and organic matter of planting licorice were significantly increased by 38%, 48% and 33% respectively (P＜0.05), electrical conductivity of soil was significantly decreased by 262% (P＜0.05). The Average Well Color Development (AWCD) indicated the activity of the soil microbial community. The results indicated that AWCD of soil growing licorice was higher than that of bare land (CK). Compared to bare land (CK), AWCD of soil growing licorice was significantly increased by 28% after 72h culture. The utilization of soil microorganism to sugar carbon sources in the licorice plot was significantly increased by 28% (P＜0.05) and the soil microbial diversity higher than bare land (CK) (P＜0.05). Principal component analyses demonstrated that licorice changed the soil microbial community composition. Sugars and amino acids were the primary carbon sources to lead to the difference, followed by the hydroxyl acids and polymers category carbon sources. In a word, planting licorice was help to improve the activity and functional diversity of soil microbial community in saline soil. So licorice cultivation was a reasonable choice for ecological restoration in saline soil.