Key Operation Points Before Fruiting in King Oyster Mushroom Cultivation with Biogas Residue
Using biogas residue to cultivate king oyster mushroom (Pleurotus eryngii) offers advantages such as developing new resources and saving costs, generally reducing production costs by about 30%. The pre-fruiting operation techniques for cultivating king oyster mushroom with biogas residue are introduced as follows: 1. Biogas residue treatment: Spread the biogas residue drawn from farm household biogas digesters on flat ground, let it aerate, and sun-dry it until the moisture content...
Using biogas residue to cultivate king oyster mushroom (Pleurotus eryngii) offers advantages such as developing new resources and saving costs, generally reducing production costs by about 30%. The pre-fruiting operation techniques for cultivating king oyster mushroom with biogas residue are introduced as follows:
1. Biogas residue treatment: Spread the biogas residue drawn from farm household biogas digesters on flat ground, let it aerate, and sun-dry it until the moisture content is below 15%, then store it for later use.
2. Substrate formula: biogas residue (calculated as air-dried material) 300 kg, corncobs 300 kg, wheat bran 30 kg, superphosphate 10 kg, urea 2 kg, lime powder 30 kg, gypsum powder 5 kg, Gu Bing Xiao (mushroom disease eliminator) 6 bags, edible fungus three-dimensional nutrient essence 240 g.
3. Sterilization treatment: Crush the corncobs to about the size of peanut kernels. Add water to all raw and auxiliary materials and mix well so that the moisture content reaches 60%-63%. For atmospheric-pressure sterilization, fill into polyethylene fruiting bags with a width of 17-22 cm; when using high-pressure sterilization, switch to polypropylene fruiting bags. After bagging, sterilization should be carried out as soon as possible: for atmospheric-pressure sterilization, when the temperature inside the bags reaches 100°C, maintain it for 8-10 hours; for high-pressure sterilization, maintain it for 3 hours; for high-pressure steam atmospheric-pressure sterilization, maintain it for 6-8 hours. In non-continuous operations, after completing sterilization, let it sit overnight for a better effect.
4. Inoculation and mycelial growth: After sterilization is completed and the bags have cooled to below 28°C or room temperature, inoculation can be carried out using conventional procedures. During the mycelial growth period after inoculation, spray a Bai Bing Qu Wu Zong solution about once every 3 days, and carry out inspections to remove contaminants; handle any contamination promptly to prevent it from spreading and proliferating. At 25°C, mycelial growth can be completed in about 25 days, then maintain for about 15 days for post-ripening culture to facilitate explosive fruiting in the first flush. Management during the fruiting period is the same as conventional practice.