Cow dung mushrooms

Fermentation of cow dung and sawdust: Select undisturbed sawdust, sifted and exposed to sunlight for 2 to 3 days. When drying, spread well and dry thoroughly. Then stored for use. Dry the cow dung and break it for use. In addition, there are sufficient auxiliary materials such as ammonium bicarbonate, potassium dihydrogen phosphate, quicklime, and light calcium carbonate. Mix cow dung and sawdust at a ratio of 1:1 by volume. At the same time, the total weight of cattle manure and sawdust is 0.3% of ammonium bicarbonate, 2% of potassium dihydrogen phosphate, and about 2% of quicklime (the amount of quicklime added, depending on the quality, and the pH is required after mixing. 7.5 to 8), 2% light calcium carbonate. After mixing, add water, so that the moisture content of 68% to 70%. Then build a 1-meter-high, 1.2-meter-wide, unlimited-length pile. After the pile is built, insert the thermometer. When the temperature rises to around 75°C, the first turn is performed (approximately 10 days). Before each pile is turned, a small amount of lime water is sprayed on the surface of the feed pile. During the fermentation process, if the middle and lower parts of the pile are found to have a tendency to turn black, appropriate punching and ventilation can be performed with wooden sticks. Turning is usually 4 to 5 times, with intervals of 10, 9, 8, and 7 days. If time is too late, you can turn 3 times. Drying and drying after fermentation, the problems that arise in the fermentation process and the treatment methods are as follows:

(1) The stockpiles do not warm up or slowly warm up. Sawdust fermentation is not as fast as straw heating. If it is found that the temperature rise is slow, ammonium bicarbonate can be properly added to adjust the ratio of carbon to nitrogen and promote warming. If the temperature can rise above 60°C, no adjustment is necessary.

(2) The lower part of the stock pile turns dark brown and has a strange smell. This phenomenon is caused by the lack of oxygen. The reason is that the stock piles are too large or too heavy, and they should be turned tightly, and the holes should be ventilated after turning. Prepare the culture medium. After the wheat grains are cooked thoroughly, add the sawdust fermentation material with about 1/4 of the grain volume of the sawdust. Then add the lime and adjust the pH value to 7.5-8. According to the weight of dry wheat, add 1% to 2% of light calcium carbonate, mix well and bottling. Sawdust material must be finely crushed and cannot have large pieces to prevent the sterilisation due to blockage and incomplete digestion. The bottle should be placed positively when it is bottled and it should not be over-tilted. Otherwise, after the bottling, the wheat grain is biased to one side, sawdust to one side, and the bacteria is inserted after filling.

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