1 Straw Softening The quality of straw treatment is the key to the success or failure of cultivated yellow back fungus and high yield. Straw is a loose, water-repellent and hard-to-solid material, especially its epidermis, which has a layer of wax that can hinder mycelium feeding. Through experiments, we have explored three methods for stylized straw. 1.1 Lay the straw on a clean surface and roll it over with a stone mortar to soften it. 1.2 The straw is cut into 2-3cm long sections and soaked in 3%-4% lime water. Remove it after 4 hours. Rinse the residue with clean water and adjust the moisture content. 1.3 Using a feed crusher, install a 2cm-diameter screen to crush it. After comminution, it will be slivery, thin, loose, and soft. 2 The suitable ratio of carbon and nitrogen for growth and development of yellow fungus fungus formula is 20:1. Based on this formula, the formula of culture material is 78% straw, 15% bran, 2% each of plant ash and superphosphate, and gypsum powder. 1% of brown sugar, salt, and salt; can also reduce the straw by 15%, add wood chips, so that the culture material is more solid, is conducive to mycelial growth. Tests have shown that the addition of a certain amount of plant ash and salt in the cultivated yellow-backed ear culture material, followed by fermentation of the culture material, is conducive to the decomposing of straw by yellow back auricular mycelium, and also decomposes silicon in the epidermal cells of rice straw. The acid salt changed the physical properties of rice straw and was beneficial to the growth of yellow back auricular mycelium. 3 When fermenting and fermenting, you must master the degree of maturity. If the fermentation time of the culture material is too long or the fermentation temperature is too high, the production of yellow back fungus will be reduced. Therefore, during the fermentation process, it is necessary to pay attention to ventilation, temperature control, instant turning, and instant bagging on the soil steamer for sterilization. Many methods of composting can be used, hemispherical composting can be used, and long composting can also be used. Taking long-stacked fermentation as an example, the softened rice straw is blended into the auxiliary materials according to the formula, and then piled into a stack of 1m in height and 1m in width, and the length is not limited. The top and four sides are slightly compacted and passed straight through 10cm. The sticks are punched vertically from the top every 30cm or so. After the holes are laid, the plastic film and straw curtains are kept warm and moisturized. The duration of fermentation depends on the temperature change. Generally, when the temperature is 25°C, the material temperature can reach 60°C in about 1 day. When the temperature is 15°C, the material temperature can reach 60°C in about 1-2 days; when the temperature is lower than 10°C, it takes more than 2 days. After the temperature of the material reaches 60°C, remove the film and ventilate the heat, cover it with a straw screen during the day, and open it at night. After 6-10 hours, you can see that vapors are emitted from the pores and white actinomycetes are produced. After the opening, the inside of the stockpile showed a distinct color layer. The thickness of the dark brown layer on the surface was about 4cm, and the white actinomycetes layer was about 20cm inside. The central layer was brown-red, and the bottom layer was similar to the surface. At this point, it is necessary to carry out the turning, stacking the surface layer and the bottom layer into the middle, and the white layer and the brown layer material are piled on the surface and re-stacked into the original shape. Generally, the material temperature will reach 60°C after 12-24 hours. At this time, the film can be ventilated and cooled to maintain the material temperature at 52-60°C. About 10 hours, there will be a large number of actinomycetes on the surface of the material to be picked up. The hand feels soft, the taste is sweet, and there is aroma. It can be bagged on the soil and sterilized on a steamer. 4 Selection of plastic bags and sterilization of culture materials Plastic bags are available in polyethylene plastic bags with a size of 20-40 cm and a thickness of 3-4 mm. Before bagging, the pH is 9-10, and the edges of the bag are compacted. After the bag is filled with the bag, the bag surface is gently pressed and the bag is retreated. Then put it into a steamer in a timely manner, code it into a well-shaped sterilization, and keep it at a temperature of 100°C for about 10 hours, then allow it to cool naturally. 5 The use of wheat cultivars to cultivate wheat seeds with yellow back fungus has the characteristics of early revival, rapid growth, thick and thick mycelium. 6 Inoculation when the inoculation temperature drops below 30°C. Before inoculation, use a conical rod with pre-erosion bacteria to make a perforation from one end to the other, then catch some of the bacteria in the hole, and then pick up some bacteria at both ends. Yellow fungus has poor resistance to Trichoderma viride and Trichoderma koningii. Once infected, the lighter ones lose production and the others fail. In the production process, appropriate methods should be taken to increase the amount of bacteria and materials contact, the general inoculation from 10% -15% is appropriate. 7 Insulating germs to control infection After inoculation, the bags are placed on the floor of the culture chamber with 5 to 6 layers so that the hyphae germinate rapidly and the growth of the bacteria is inhibited. When the mycelium on the two ends of the bag grows to 4-6cm, loosen the cable and increase oxygen. The culture room temperature is controlled at 23-25 ​​°C to promote the healthy growth of mycelium. In order to make the bags uniform in temperature, the bag position must be interchanged up and down every 7 days. When cultivating 40-45 days and mycelium is filled with bags, the bags are piled up flat. 8 ear management using two bags ear management method, the specific method of operation is: first the mycelium filled with mycelium bags moved into the ear room, arranged in a row, stacking 5-8 layers, spacing 60-70cm, keep ears out Room air relative humidity is about 90%, and pay attention to ventilation and proper lighting to stimulate the ear rod to form the ear base. After ear buds have grown into ear buds, ear buds should be grown as far as possible from both ends of the ear, and they should be harvested after maturity. After the first tide was harvested, Yangshuo was built under the arbor of the forest (which requires good ventilation and drainage), and the width was 1m. The surface was 30cm taller than the ground and had a turtleback shape. Covering the soil requires good granule structure, good water permeability, and soil particle size within 1cm. The surface of the fungus bar from which the first tide has been collected is sterilized with a 0.1% potassium permanganate solution. After the liquid is removed, the liquid is removed from the bag with a blade, and then it is replaced with a tile and then immediately covered. On the 1 ~ 2cm thick moist soil particles, derrick bow plastic film shed moisture. Covering the soil for 2-3 days, the white mycelium can be seen spreading into the soil, and ear buds can be broken out at about 10 days at a temperature suitable for earing. At this time, the soil should be kept wet and dry and wet. When the ear bud broke out, the film was sprayed and moisturized.