After the broad bean is harvested, its straw is generally used as fuel to burn off, which is a pity. Broad bean stalk is a good raw material for cultivating straw mushrooms. 100 kilograms of broad bean stalks can produce about 40 kilograms of fresh straw mushrooms. The yield is 2-3 times that of rice straw, comparable to cottonseed husks. Raw material processing. Broad bean stalks were fully dried in the field and repeatedly rolled with a mortar or stone to break them into small pieces of 5-10 cm. Culture formulation. Broad bean straw 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% of the water mix. Build a heap fermentation. Firstly, the broad bean straw was fully pre-wetted with lime water, and the other auxiliary materials were mixed and then treated with carbendazim 500 times pre-wet treatment to build heaps of membranes and bored respectively. After 24 hours, they were combined and fermented. When building a heap, first spread a layer of 20 cm thick broad bean straw, sprinkle a layer of mixed auxiliary materials on top, then spread a layer of broad bean straw, and add accessories, so that the stack is 1 meter wide, 1 meter high, and the length is not limited. If water is not enough, add lime water. After covering the film, moisture fermentation. Turn over. After the material temperature rises to 60°C, it can be turned for 48 hours. The materials inside and outside the stockpile are exchanged with each other and piled up in a piled manner. When the temperature of the material rose again to above 60°C, it remained for 24 hours and was turned over again. A total of 3-4 turnovers are required, and the total fermentation period is 7-8 days. Every time the pile is turned, it should be inspected to adjust the moisture within the material and lime water should be added when the water is needed. After the end of fermentation, the material is dark brown, soft and flexible, no pests, no ammonia smell or acid, odor and other odors, there are a lot of high-temperature white actinomycetes, pH 9, water content of 65%. Seed germs. In the two-stage cultivation method, the 45240.04 cm polyethylene plastic bag was used to load the bacteria, and 2 layers of material were sowed in 3 layers. After the mycelium was full of bags, the bags were taken out and covered with fermented and burnt soil. The big bed cultivation is planted by wave cultivation method, and two layers of seeds are sowed in 2 layers. The material surface covers 2 cm of nutritious soil and the film is coated with bacteria. Mushroom management. After sowing, the temperature of the material is controlled at about 30°C, and after 7-8 days, the mycelium can be filled with mushrooms. After a large number of bed bases are formed, the relative humidity of the air is increased to 90%. When the fruit body grows to the size of broad beans, the water is sprayed 3-4 times a day. The water temperature should be similar to the natural air temperature. It is not possible to directly spray well water or deep running water. Water temperature is too low to cause dead mushrooms. Appropriate ventilation after spraying the water, increasing the oxygen supply, can be harvested after 3-4 days. Harvested. When the color of the fruiting body is changed from deep to shallow, the veil tightly covers the cap or the vegetative curtain slightly separates from the stalk. Harvest 2-3 times a day. Under normal circumstances, a total of 3-4 tidal mushrooms can be harvested. The production cycle is about 30 days.
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