Preparation method and application of biological seedling raising substrate of chaetomium globosum

Abstract

The invention provides a preparation method and application of a biological seedling raising substrate of chaetomium globosum, and belongs to the technical field of agricultural microorganisms. The method comprises the steps that after preliminary fermentation is performed on agricultural waste, the agricultural waste is inoculated with chaetomium globosum ND35 sexual conidial powder to perform secondary fermentation, so that a functional flora taking chaetomium globosum as the main microorganisms in the substrate, and the biological seedling raising substrate of chaetomium globosum is obtained. The agricultural waste comprises, but is not limited to, bark, wood chips, straw and the like. The preparation method and application of the biological seedling raising substrate of chaetomium globosum have the advantages of being simple, being capable of being directly applied to the seedling raising stages of tomatoes, cucumbers and other plants, planting chaetomium globosum ND35 bacterial strains into the plants more directly and quickly, and being beneficial to the plants perpetually; the biological seedling raising substrate of chaetomium globosum is an excellent seedling raising substrate, can be applied to industrialized seedling raising of various plants, fills in the blank of domestic excellent substrates, replaces imported substrates, promotes the healthy development of industrialized seedling raising of vegetables, and has great economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of agricultural microorganisms, and relates to a preparation method and application of a chaetomium globosum biological seedling-raising substrate, in particular to a preparation method of a biological seedling-raising substrate using ascospores of the Chaetomium globosum ND35 strain as active ingredients . Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Chaetomium globosa (C.globosum) ND35 strain is an endophytic fungus isolated from healthy Populus tomentosa, which belongs to Ascomycota, Sclerotinia, Globosum, Nigeriaceae, and Chaetomycetes. Existing test results show that Chaetomium globosa ND35 strain can effectively colonize vegetable plants such as cucumber, tomato, kidney bean and field crops such as sweet potato, wheat, potato, tobacco, ginger, and has a strong e...

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Problems solved by technology

However, because there are few varieties of high-quality, high-yield and disease-resistant vegetables in the production of facility vegetables, and the breeding cycle of disease-resistant varieties is long, so agronomic measures such as grafting, chemical control and biological control are often used to control Fusarium wilt

Grafting cultivation and soil chemical treatment can effectively prevent and control the occurrence of vegetable wilt, but with the large-scale promotion of grafting cultivation in China, the decline of rootstock resistance and improper management measures have increased the incidence of grafted seedlings Fusarium wilt year by year (Zhang Lihua , 2008); the cost of chemical agent control is high and labor intensive, and long-term use can easily cause pathogenic bacteria to develop drug resistance, leading to a decline in the control effect, and at the same time causing pesticide residues and air pollution (Faheem M, 2015); biological control methods are environmentally friendly, The risk is low, but the potential has not been fully utilized (Tikhonovich IA, 2011). Some biocontrol bacteria with high control effects on soil-borne diseases such as fusarium wilt and damping-off that were screened under laboratory conditions are affected by the environment in the field. Larger, the number of colonization is often reduced, and the effect of disease prevention is significantly weakened (Wu Xiaoqing, 2017)

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