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Moderator: Hello everyone, here is the "Rural Micro Classroom", today we are very honored to invite Teacher Wang Hua of the Institute of Edible Mushrooms of Shanxi Academy of Agricultural Sciences. Hello, Teacher Wang.
Teacher Wang: Hello host, hello everyone.
Host: Okay, so how long does it take for the white spirit mushroom to germinate? Teacher Wang, you also talked in detail with our rural friends.
Teacher Wang: Okay, under normal circumstances, the bacteria can be maintained in 30 days to 35 days the hyphae can grow in bags, it is generally divided into three stages: the first stage is just after the 8 to 15 days after the seeding, the second week most of the hyphae have been extended to the material 2 to 3 cm, at this time to observe whether the hyphae are long white and dense, this time it is possible to encounter the slow growth of the hyphae. Why the hyphae grow slowly, there may be the following reasons: the first point is that the bag material of the bag is too tight; the second is that the temperature of the bag is too high and is not conducive to the exchange of oxygen; the third is that the moisture inside is too large to cause the hyphae to suffocate, according to the above three situations after careful inspection, separate treatment. The second stage is 15 days to 22 days after inoculation, that is, the third week, this time the mycelium has grown evenly, it belongs to a uniform growth period, the peak period of pollution, it is also at this time, it is possible that the exhaust gas discharged from the bag is more and more, and then the bag begins to shrink, this time according to the status of the bacteria, classified treatment, the full bag to expand the inlet, oxygenation, medium bag to beat, so that the culture material loose to promote growth, at this time for the bacteria bag is relatively poor bacteria bags, It should be treated separately. The corresponding measures are: the first is that the hyphae with less moisture in the culture material grow sparsely, at this time you can use 1% of the lime water to inject cold boiled water, after the opening to inject it into a role in promoting growth; the second aspect is that the culture material in the bag has a sour smell or the color is brownish red, at this time, although the hyphae are relatively thick and white, but it grows slowly, open the volatile mouth to let it volatilize the odor, and then add 5% baking soda solution; the third point is to see if there are insects in the bag, this time should be picked out in time, Fumigation in a separate room with 5% of the hydrotheric liquid of dichlorvos, killing maggots, you can use dichlorvos fumigation, not close contact, is fumigation; the fourth point is that the temperature in the bag is too high more than 33 degrees, causing the hyphae to yellow, at this time to quickly move the bag into a low-temperature room below 20 degrees, for low-temperature bacteria; the fifth point may be that it is contaminated by mold, the small piece contaminated by mold, you can inject 25% of the thick brine or dig out the contaminated block to re-inoculate, with 10% The lime pulp is sealed after it is carried out, and if it is contaminated with streptomyces or other molds, it is necessary to take timely removal methods. In addition, it is necessary to maintain a relative humidity of 60%, and the bag temperature is 22 degrees to 25 degrees. The third stage is the 23rd to 30th day after inoculation, that is, the fourth week, at this time 70% of the bags have all been full of hyphae, and the treated sick bags are slow but it is reclassified, and the material temperature of the bag material that has been full of bacteria bags has been close to the temperature of the space, at this time it is necessary to control the temperature, stabilize, let it grow back, and continue to germinate management. At this stage, the hyphae branching ability of the white spirit mushroom is particularly strong, although its hyphae have grown all over the bag, but its growth has not completely stopped, and it has continued, the parasitic hyphae, it will fill the bag around, in this case, the white spirit mushroom hyphae are full of bags, after a week should be taken to reduce the temperature, to prevent it from growing, to shade during the day, and then ventilate at night, inhibit the bacteria from being formed prematurely or too much of these measures.
Moderator: Okay, at the end of the program, I would like to thank Mr. Wang Hua once again for being a guest of our program. Today's show ends here, and we will meet again in the next issue.