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应用生态学报 ›› 2016, Vol. 27 ›› Issue (9): 3016-3022.doi: 10.13287/j.1001-9332.201609.040

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配施磷细菌肥对复垦土壤细菌多样性及磷有效性的影响

孟会生1, 洪坚平1*, 杨毅1, 王向英2, 李廷亮1, 栗丽1   

  1. 1山西农业大学资源环境学院, 山西太谷 030801;
    2山西农业大学生命科学学院, 山西太谷 030801
  • 收稿日期:2016-03-11 发布日期:2016-09-18
  • 通讯作者: * E-mail: hongjpsx@163.com
  • 作者简介:孟会生,男,1977年生,博士研究生. 主要从事土壤复垦与生态重建研究. E-mail: huishengmeng@126.com
  • 基金资助:
    国家自然科学基金项目(31272257,4140011839)和国家公益性行业专项(201103004-5)资助

Effect of applying phosphorus bacteria fertilizer on bacterial diversity and phosphorus availability in reclaimed soil.

MENG Hui-sheng1, HONG Jian-ping1*, YANG Yi1, WANG Xiang-ying2, LI Ting-liang1, LI Li1   

  1. 1College of Resources and Environmental Science, Shanxi Agricultural University, Taigu 030801,Shanxi, China;
    2College of Life Science, Shanxi Agricultural University, Taigu 030801, China
  • Received:2016-03-11 Published:2016-09-18
  • Contact: * E-mail: hongjpsx@163.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31272257, 4140011839) and the special fund for the Scientific Research in the Public Interest of China (201103004-5)

摘要: 为了解磷细菌肥对复垦土壤微生物群落结构变化特征和磷有效性的影响,本研究以连续配施磷细菌肥5年的定位试验为背景,利用16S rDNA基因序列测序方法对土壤细菌群落多样性进行分析,探讨土壤细菌群落与土壤Olsen-P、碱性磷酸酶的关系.试验共设对照、单施化肥、有机肥、有机肥化肥、化肥磷细菌肥、有机肥磷细菌肥和有机肥化肥磷细菌肥7个处理.结果表明: 复垦土壤中放线菌门和变形菌门菌群的相对丰度最大,分别为21.6%~32.2%和13.8%~28.9%.有机肥化肥磷细菌肥处理的OTU数和Chao1指数分别为809和26190,均属最高.磷细菌肥处理能提高土壤中放线菌门和变形菌门菌群的相对丰度,降低土壤中酸杆菌门、热袍菌门和硝化螺旋菌门菌群的相对丰度,对诺卡氏菌属、屈挠杆菌属有一定的促进作用.有机肥化肥磷细菌肥处理能够提高复垦土壤Olsen-P及碱性磷酸酶活性.复垦土壤变形菌门与Olsen-P、碱性磷酸酶的相关系数最高(0.900、0.955),在一定程度上可以作为土壤磷有效性的灵敏性指标.

Abstract: A located field experiment of applying phosphorus bacteria fertilizer for five years was carried out to study the effects of applying phosphorus bacteria fertilizer on the characteristics of microbial community structure in reclaimed soil. We studied the diversity of bacterial community using 16S rDNA gene sequencing and analyzed the relationship between bacterial community and Olsen-P, alkaline phosphatase. Seven treatments including control, chemical fertilizer, manure, manure and chemical fertilizer, chemical fertilizer and phosphorus bacteria, manure and phosphorus bacteria, and, manure,chemical fertilizer and phosphorus bacteria were conducted. The results showed that the relative abundance of Actinobacteria and Proteobacteria in reclaimed soil was the largest, which was 21.6%-32.2% and 13.8%-28.9%, respectively. Operational taxonomic units (OTU) number and Chao1 index of the treatment of manure, chemical fertilizer and phosphorus bacteria fertilizer was 809 and 26190, which was the highest. Phosphorus bacteria fertilizer could improve the relative abundance of soil Actinomycetes and Proteobacteria and decrease that of soil Acidobacteria, Thermotogae and Nitrospira, and had stimulatory effect on Nocardioides and Flexibacter. The treatment of manure, chemical fertilizer and phosphorus bacteria fertilizer could improve the Olsen-P and alkaline phosphatase activities in reclaimed soil. Correlation coefficients between Proteobacteria and Olsen-P, alkaline phosphatase were the highest (0.900 and 0.955). To a certain extent, Proteobacteria could be used as the sensitivity index of soil phosphorus availability.