Penicillium composition for promoting plant growth, fungicide and application thereof
A technology that promotes plant growth and composition, applied in the field of microorganisms, can solve the problems of pollutant accumulation, little effect, excessive application of chemical fertilizers, etc., achieve high biological safety, relieve environmental pressure, and promote plant growth.
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[0032] In the present invention, the preparation method of the metabolite of the Penicillium composition preferably comprises the following steps:
[0033] Activating each Penicillium in the Penicillium composition and then fermenting and culturing to obtain the bacterial liquid of each Penicillium;
[0034] The above bacterial liquid is subjected to high-temperature inactivation, drying and grinding in sequence to obtain the metabolite of the Penicillium composition, that is, the inactivated dry powder of the Penicillium composition.
[0035] In the present invention, when Paecilomyces variotii is activated, it preferably includes sterile water activation and culture medium activation. In the present invention, the process of described sterile water activation is preferably that the bacterium colony of Paecilomyces wansoni (using a bamboo stick to pick a small colony) is inoculated in a 250mL conical flask filled with 100mL sterile water, At a temperature of 28°C and a rotat...
Embodiment 1
[0057] (1) Preparation medium: 5°Bé wort medium (Paecilomyces wannerii): 1.0L of 5°Bé wort, natural pH; PDA medium (Penicillium digitatum): 1.0L of potato extract, glucose 20.0g, natural pH; malt extract culture medium (Penicillium insularia, Penicillium vicinus): malt extract 20.0g, tap water 1.0L, natural pH;
[0058] (2) Activation and fermentation culture: Scrape the colony of Penicillium digitatum (use a bamboo stick to pick a small colony) and inoculate it in a 250mL triangular flask filled with 100mL sterile water, at a temperature of 25°C and a rotational speed of Under the condition of 120 r / min, vibrate for 30 minutes to fully disperse the spore mass, use a pipette gun to draw the spore suspension and place it on a hemocytometer for counting, and finally obtain a concentration of 10 8 cfu / mL spore suspension; the spore suspension obtained above was inoculated in a Erlenmeyer flask containing 100 mL of PDA medium, the inoculation amount was 3% of the volume of the PDA...
Embodiment 2
[0065] Inoculate Bacillus subtilis into a Erlenmeyer flask containing 100mL of NA medium (beef extract 3.0g, peptone 5.0g, NaCl 5.0g, distilled water 1L, pH adjusted to 7.0), the inoculation amount is 3% of the medium volume, 28°C , 125rpm, cultivated for 3 days, the number of bacteria ≥ 10 9 cfu / mL, to obtain Bacillus subtilis fermentation broth;
[0066] Get 100 parts (100 g) of plant-growth-promoting bacterial agent I obtained in Example 1 and 30 parts (30 g) of Bacillus subtilis fermentation broth to obtain plant-growth-promoting bacterial agent II.
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