Where can I find straw mushroom yield-increasing techniques?
Why do the mycelia shrink during straw mushroom cultivation? The main reasons for straw mushroom mycelium shrinkage are as follows: normally, about 12 hours after sowing straw mushrooms, the spawn blocks should germinate and begin growing into the substrate. If after 24 hours the mycelia still have not germinated or still do not grow into the substrate, it may be that the mycelia have...
I grow straw mushrooms but the yield has always been low. Where are the straw mushroom yield-increasing techniques?To find cultivation techniques, go to Zhongdi Net. Straw mushroom yield-increasing techniques: first, 4 methods for you:
I. Secondary inoculation. Adopting a secondary inoculation measure is beneficial for increasing straw mushroom yield. Straw mushroom mycelia grow too fast and are extremely prone to aging, which leads to weakened vitality and an inability to effectively use the nutrients in the compost to continue producing mushrooms. After harvesting the first flush of mushrooms, loosen the surface of the substrate, sprinkle it thoroughly with lime water, adjust the pH of the compost to 8-9, then broadcast spawn on the surface of the substrate, and after sowing cover with a thin layer of fermented compost. Alternatively, after harvesting the first and second flushes of mushrooms, turn the substrate blocks over, turn the bottom-layer compost to the surface, spray 1% lime water to replenish water and adjust the pH, then inoculate a second time on the surface, with an inoculation rate of 2%-3%, which generally can increase yield by about 30%. When cultivating straw mushrooms with rice straw, 4 days after stacking the straw and sowing, insert spawn into the gaps between the straw layers for secondary inoculation, with an inoculation rate of about 20% of the first amount. In this way, after the first flush of mushrooms is harvested, the spawn sown the second time can decompose from the straw stack, accumulate nutrients, and continue to produce mushrooms.
II. Adjust the pH. During the growth of straw mushrooms, a large amount of nutrients in the compost is consumed and metabolites are produced, among which organic acids can increase the acidity of the compost and affect the normal recovery of straw mushroom mycelia and continued mushroom production. After harvesting the first flush of mushrooms, applying some nutrient solution and adjusting the compost to be slightly alkaline can promote mycelial recovery, prolong the harvest period, and increase mushroom yield. (1) Spray the compost with 3% lime water, which can not only replenish water but also make the compost slightly alkaline. (2) Spray the compost with 0.1% urea and bran water (100 kg water plus 10 kg bran, boil and filter, take 50 kg filtrate and add 50 kg clean water). The urea rate is 0.1%-0.2%, and the amount must not be too much, otherwise it is easy to produce Coprinus contaminants. (3) Apply dry cow dung and human urine. Break up dry cow dung, add 40% human urine, mix evenly, compost for one day before use, and apply to the surface of the substrate after each flush of mushrooms is harvested. If some chicken and duck manure is added, the effect will be even better.
III. Implement casing soil. Casing soil for straw mushrooms can improve the water-retention performance of the compost and its adaptability to humidity changes, make the mushrooms plump, reduce dead mushrooms, and increase yield by 20%-40%. The casing soil material can be garden soil (dug from 8-10 cm below the surface), and the casing soil thickness is generally preferably 2 cm.
IV. Cover with plastic film. After inoculating straw mushrooms, cover around the mushroom bed with plastic film, which can raise and stabilize the substrate temperature, maintain humidity, increase the carbon dioxide concentration in the microclimate around the substrate surface, promote the reproduction of relevant microorganisms, and promote straw mushroom mycelial growth. Covering with plastic film should be done immediately after inoculation, and earlier is better than later. To prevent the plastic film from clinging tightly to the substrate surface and affecting normal respiration of the spawn, some rice straw or wheat straw soaked in lime water can be scattered on the substrate surface. After covering with plastic film, pay attention to checking the substrate temperature. If the substrate temperature exceeds 40°C, remove the film in time to cool it down. Four days after covering with plastic film, the film should be removed regularly for ventilation or propped up with bamboo strips to prevent excessive surface mycelial growth and affect the extension of mycelia into the substrate. After mushroom buds appear, the covering film should be removed in time, or the film should be propped up, to prevent the mushroom buds from suffocating due to lack of oxygen.
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