生物技术通报 ›› 2017, Vol. 33 ›› Issue (12): 119-124.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0402

• 研究报告 • 上一篇    下一篇

黄赭色链霉菌固体菌剂的研制及其对小麦幼苗生长的影响

何文1,2, 刘金龙2, 寇娟妮2, 汤正帅2, 刘丽英2, 孙中涛1,2   

  1. 1. 山东农业大学泉林黄腐酸肥料工程实验室,泰安 271018;
    2. 山东农业大学生命科学学院,泰安 271018
  • 收稿日期:2017-05-17 出版日期:2017-12-25 发布日期:2017-12-21
  • 作者简介:何文,女,硕士研究生,研究方向:微生物工程;E- mail:wenhehw11@163.com
  • 基金资助:
    山东农业大学泉林黄腐酸肥料工程实验室开放研发基金项目(QL2016-6),山东省科技重大专项(2015ZDXX0502B04),山东省农业重大应用技术创新项目(2015年)

Development of Microbial Inoculum of Streptomyces silaceus and Its Effect on Wheat Seedling Growth

HE Wen1, 2, LIU Jin-long2, KOU Juan-ni2, TANG Zheng-shuai2, LIU Li-ying2, SUN Zhong-tao1, 2   

  1. 1. Shandong Agricultural University,Quan Lin Humic Acid Fertilizer Engineering Laboratory,Tai’an 271018;
    2. College of Life Sciences,Shandong Agricultural University,Tai’an 271018
  • Received:2017-05-17 Published:2017-12-25 Online:2017-12-21

摘要: 为了提高黄赭色链霉菌SN16菌剂的生物稳定性,通过对其载体、保护剂和分散剂等助剂的用量进行优化,确定最佳配方,并采用盆栽试验研究其对小麦幼苗生长的影响。结果表明,黄赭色链霉菌SN16菌剂的最佳配方以重量百分比计为:黄赭色链霉菌SN16原粉20%,海藻酸钠溶液(1 mg/mL)24%,羧甲基纤维素钠溶液(10 mg/mL)24%,硅藻土32%。在此条件下,在4℃保存60 d后菌剂的生物量为2.45×108 CFU/g,常温保存下60 d后其生物量能达0.94×108 CFU/g。盆栽实验结果表明,与对照相比,施用1%浓度的黄赭色链霉菌SN16菌剂的小麦幼苗的株高、株鲜重和株干重分别提高了9.85%、57.90%、66.67%,均达到了显著水平(P<0.05);但对根长的促生作用未达到显著水平(P>0.05)。研究结果为农业生产提供一种新型的黄赭色链霉菌菌剂。

关键词: 黄赭色链霉菌, 微生物菌剂, 助剂, 小麦, 幼苗生长

Abstract: In order to improve the stability of microbial agents with Streptomyces silaceus SN16,the amounts of carriers,protectants and dispersants were optimized and the optimal formula of them was determined,and the influence of which on wheat seedling growth was studied by pot experiment. Results showed that the optimal formula of the microbial agent was Streptomyces SN16 20%,sodium alginate solution(1 mg/mL)24%,sodium carboxymethyl cellulose(CMC)solution(10 mg/mL)24%,and diatomaceous earth 32%. By this formula,the biomass of microbial inoculum was 2.45×108 CFU/g while conserved at 4℃ and 0.94×108 CFU/g at room temperature after 60 d. Pot experiment demonstrated that the plant height,fresh weight and dry weight of wheat seedlings applied with microbial agent of 1% Streptomyces silaceus SN16 increased by 9.85%,57.90% and 66.67% compared to the CK,respectively,which reached significant level(P<0.05). However,its promoting effect on root was insignificant(P>0.05). This research provides a new type of Streptomyces silaceus agent for agricultural production.

Key words: Streptomyces silaceus, microbial agents, additives, wheat, seedling growth