1, raw material processing. After threshing, the stalks of the beans are dried thoroughly, and then spread on the ground with a mortar or a mechanically repeated rolling to break them into small pieces of 5-10 cm.
2, culture ingredients formula. Broad bean stalk 80%, dry cow dung powder 10%, wheat bran or rice bran 4%, rapeseed cake powder 2%, superphosphate 2%, gypsum powder 2%. Plus lime powder 5% (watered spices). PH value 9, moisture content 65%.
3, build a heap fermentation. Firstly, the broad bean stalks were fully pre-wetted with lime water, and the other auxiliary materials were mixed well with the cow dung powder and then pre-wet with 1:500 times carbendazim solution. When constructing the heap, first lay a layer of 20cm thick broad bean stalk, spread a layer of mixed auxiliary materials on it, and then spread a layer of broad bean stalks, add accessories, so piled into a height, width of 1m, unlimited length of the stockpiles, build a heap When water is not enough, lime water can be added in layers. After the stack is completed, the surrounding membranes will be moistened and fermented.
4, turn the heap. When the material temperature rises to 60°C, it can be turned for 48 hours. The method is to replace the raw materials inside and outside the material pile with each other, and build the piles to pile up. When the feed temperature rises again to above 60°C, it is kept for a further 24 hours and then it is turned into a pile of 3-4 times for a total fermentation period of 7-8 days. Every time the stack is turned, it should be checked to adjust the moisture within the material, and lime water should be added when the water needs to be replenished. After the end of fermentation, the material is dark brown, soft and elastic, free of bacteria and insect pests, no smell of ammonia and acid, odor and other odors, there are a lot of high-temperature white actinomycetes, PH value of 9 and water content of 65% for high-quality culture material.
5, sowing germs. The use of "two-stage cultivation method" should be selected 24450.04cm polyethylene plastic bag loading material bacteria, with two layers of material broadcast three species, mycelium full bag and then remove the bag covered with fermented fire soil mushroom, yield higher. The use of a large bed planted suitable wave planting method sowing seeds, shop two layers of material broadcast two species, the material surface covered with 2cm thick nutrient soil, filming bacteria.
6, fruiting management. After sowing, the temperature of the material is controlled to be about 30°C, and after about 7-8 days, the mycelium can be filled with mushrooms. When a large number of bed bases are formed. The relative humidity of the air needs to be increased to 90% so that the original base can grow smoothly. When the fruit body grows to the size of broad bean, spray water 3-4 times a day. The water temperature should be suitable for the natural temperature, and it cannot directly spray well water or deep running water. , The water temperature is too low to cause a large number of dead mushrooms. After the water is sprayed, it should be properly ventilated to increase the oxygen supply, and it can be harvested after about 3-4 days.
7, harvest. When the color of the fruiting body is changed from dark to light, the fungus must be harvested in a timely manner if the veil tightly covers the vegetative cover or the vegetative curtain slightly separates from the stipe. Should pick 2-3 times a day. Under normal circumstances, a total of 3-4 shiitake mushrooms can be harvested, with a production cycle of about 30 days.
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