Biotechnology Bulletin ›› 2020, Vol. 36 ›› Issue (4): 164-174.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0764

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Preparation of Microalgae-derived Biological Stimulants and Its Application in Protected Agriculture

ZHANG Jing-jie1, LIU Shen-kun2, TANG Tao3, GE Bao-sheng4, LI Run-zhi1, CUI Hong-li1   

  1. 1. Institute of Molecular Agriculture and Bioenergy,Shanxi Agricultural University,Taigu 030801;
    2. Yantai Academy of Agricultural Sciences,Yantai 265500;
    3. Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210;
    4. China University of Petroleum,Bioengineering Center,Qingdao 266580
  • Received:2019-08-23 Online:2020-04-26 Published:2020-04-30

Abstract: Agricultural non-point source pollution from the excessive use of fertilizers and pesticides has become an important part of environmental pollution in China,which brings huge challenges to green,efficient and safe agricultural production as well as protected agriculture. It is urgent to find a new substitute for traditional chemical fertilizers,improve the use efficiency of chemical fertilizers and protect ecological environment. Biological stimulant is a group of components and/or microorganisms regulating plant growth. It can improve physical and chemical properties of soil and community of microorganisms,promote crop metabolism and natural growth,enhance the absorption and utilization of nutrients,increase crop resilience,and improve crop yield and product quality while it is used in agriculture. There are amount of natural active substances with novel structure and unique function in microalgae,which is an ideal source for the preparation of novel biological stimulants. While microalgae are used in environmental treatment,a sufficient amount of microalgae biomass can be obtained to prepare biological stimulants,so as the purpose of managing the environment,reducing costs,improving quality and increasing efficiency is achieved. In this paper,we summarized the research progresses on the definition,function of microalgae sourced biological stimulants(MSBS),preparation of biological stimulant with microalgae whole cells and natural active substances,and their application effects and action mechanisms of them on plant and soil,aiming at providing the theoretical foundation and practical guidance for the large-scale preparation and application of MSBS in agricultural production.

Key words: fertilizers and pesticides, agricultural non-point source pollution, biological stimulants, microalgae, protected agriculture