In the course of cultivation of Coprinus comatus in recent years, a kind of hybrid bacteria with a strong ability to compete has commonly occurred. Because its fruiting body resembles chicken feet, it is often referred to as “claw claw”. The fungus often occurs in the middle and late stages of the coprinus comatus mushrooming stage, lighter production cuts, heavy two, three tide mushroom harvest. The following are some of the measures that have been summarized in practice for the prevention and control of “claw claws”. First, the handling of culture materials. The ingredients of the culture material must be broken and ground before fermentation, and dried in the sun for 3-4 days. In particular, the livestock manure is added to some formulas, and it cannot be used without full sun exposure. When building a heap, first mix the required ingredients and add water to adjust the moisture content to 65-70%. When the heap is built, the width of the pile is 12-15 meters and the height is 0.8-1.0 meters, naturally extending vertically into a trapezoidal shape. At the waist of the heap 30-40 cm apart, use a wooden stick with a diameter of 3-4 cm to play two rows of holes in parallel. When the temperature of the material center rises above 60-65°C, the time is counted, and after 24 hours the stack is turned. When the temperature of the material center rises again to above 60-65°C after the double stack, the fermentation is completed after 24 hours, and then the culture medium should be readjusted. Water content 60-65%. Ph 7.5 to 8. Second, the cultivation site should be rotated. Coprinus comatus is completely cleared of bed surface after harvesting, and conditional rotations can be implemented for more than one year to reduce pests and diseases. When growing coprinus comatus in a solar greenhouse, the summer cocoon can grow corn or soybeans. If spring cockroach is planted with Coprinus comatus, planting the fall cockroach will often cause the occurrence of coccidia. Third, cover soil treatment should be strict. Coprinus comatus is not covered with mushrooms. The Census should choose a soil that has never been planted in Coprinus comatus plots away from the cultivation site. It is best to use deep soil below 20 cm. The cover soil should be sieved and added with 1% lime powder. A heap of 5-1o kg of 1000-fold formaldehyde solution per 100 kg should be used. The membrane can be used with a pressure of 24 hours. Fourth, timely prevention and treatment. Once the "pigmenopause" occurs on the surface of the bed, it is necessary to timely remove the medium below it and put it in a plastic bag to bring it deep outside the shed. Occurrence of lime powder around the "claw" bacteria occurred. Chemical control can be sprayed with 50% carbendazim 700-800 times or 75% chlorothalonil 500-700 times.

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