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中国农学通报 ›› 2023, Vol. 39 ›› Issue (27): 157-164.doi: 10.11924/j.issn.1000-6850.casb2022-0974

• 畜牧·动物医学·蚕·蜂 • 上一篇    

异养氨氧化细菌对多花黑麦草促生的影响

李亚楠1,2(), 王海红3, 吴迪1,2(), 李理想1, 朱喜霞3, 亓琳1, 张明明1, 王晓凌1   

  1. 1 河南科技大学农学院,河南洛阳 471003
    2 榆林学院生命科学学院,陕西榆林 719000
    3 安阳市殷都区农业农村局,河南安阳 455000
  • 收稿日期:2022-11-23 修回日期:2023-01-15 出版日期:2023-09-25 发布日期:2023-09-22
  • 通讯作者: 吴迪,男,1997年出生,河南驻马店人,在读研究生,研究方向:植物生理生态学。通信地址:471003 河南省洛阳市洛龙区开元大道河南科技大学开元校区,Tel:17838406616,E-mail:wd01183118@163.com。
  • 作者简介:

    李亚楠,女,1996年出生,河南新郑人,在读研究生,研究方向:植物生理生态学。通信地址:471003 河南省洛阳市洛龙区开元大道河南科技大学开元校区,Tel:18438661096,E-mail:

  • 基金资助:
    国家自然科学基金“根叶互作诱导的细胞分裂素对多花黑麦草持续性再生的调控机制”(U1304326); 河南省科技创新杰出青年基金“根源细胞分裂素对旱后复水玉米补偿性生长的调控机制”(174100510004)

Effect of Heterotrophic AOB on the Growth-promoting of Lolium multiflorum

LI Ya’nan1,2(), WANG Haihong3, WU Di1,2(), LI Lixiang1, ZHU Xixia3, QI Lin1, ZHANG Mingming1, WANG Xiaoling1   

  1. 1 College of Agriculture/College of Tree Peony, Henan University of Science and Technology, Luoyang, Henan 471003
    2 College of Life Sciences, Yulin University, Yulin, Shaanxi 719000
    3 Yindu District Bureau of Agriculture and Rural Affairs of Anyang City, Anyang, Henan 455000
  • Received:2022-11-23 Revised:2023-01-15 Published-:2023-09-25 Online:2023-09-22

摘要:

旨在揭示土壤氨氧化细菌(Ammonia oxdizing bacteria,AOB)菌株对多花黑麦草(Lolium multiflorum Lam.)的促生效果,以盆栽多花黑麦草为试验材料,共设置4个处理:未添加硝化抑制剂和未接种、接种AOB菌株后再生、添加硝化抑制剂后再生、添加硝化抑制剂后接种AOB菌株再生。结果表明,与未添加抑制剂和未接种再生相比,接种AOB菌株的多花黑麦草再生叶生物量增加23.53%~48.63%,叶片净光合率增加27.91%~48.54%,根际土壤硝化速率增加43.01%~144.21%;土壤中添加硝化抑制剂抑制了多花黑麦草的促生,而接种S2_8_1菌株后,多花黑麦草促生效果均优于添加硝化抑制剂处理。综上,接种S2_8_1后促进了多花黑麦草根际硝化作用,刺激NO3-含量的增加,光合作用增强,进而促进多花黑麦草的促生效果。

关键词: 氨氧化细菌, 根际, 土壤硝化作用, 光合速率, 再生

Abstract:

This study aimed to elucidate the growth-promoting effects of Ammonia oxidizing bacteria (AOB) strains on Italian ryegrass (Lolium multiflorum Lam.). Pot-grown Italian ryegrass was used as the experimental material, four treatments were established: no nitrification inhibitor and no inoculation, inoculation with AOB strains after regeneration, regeneration after adding a nitrification inhibitor, and inoculation with AOB strains after adding a nitrification inhibitor. The results showed that, compared to the non-inhibited and non-inoculated regeneration, Italian ryegrass inoculated with AOB strains exhibited an increase of 23.53% to 48.63% in leaf biomass, 27.91% to 48.54% in net photosynthetic rate, and 43.01% to 144.21% in rhizosphere soil nitrification rate. The addition of a nitrification inhibitor in the soil suppressed the growth promotion of Italian ryegrass. However, after inoculating with the S2_8_1 strain, the growth-promoting effects were superior to those of adding a nitrification inhibitor. In conclusion, the inoculation of S2_8_1 enhanced the nitrification process in Italian ryegrass rhizosphere, stimulated the increase of NO3- content, and strengthened photosynthesis, and ultimately promoted the growth-promoting effect of Italian ryegrass.

Key words: Ammonia oxdizing bacteria, rhizosphere, soil nitrification, photosynthetic rate, regeneration