Selection of good strains At present, there are two main strains of good strains of Agrocybe aegerita that are planted in various parts of China. One is the Fungi Research Institute of Sanming City, Fujian Province. The strain has a thick stipe, a small number of fruiting bodies, a dark color, and a brown cover. The fruiting body has strong high temperature resistance and high yield, but the taste of the fresh mushrooms is slightly poor. The second is Guangchang County, Jiangxi Province. Its stems are fine, the number of fruiting bodies is more, the color is slightly lighter, the cap is red-brown, and the yield is slightly lower. But the meat is tender and the fresh mushrooms taste good. It is recommended that the peasant farmers directly introduce the parent species from the formal units to expand.
The use of a scientific formulation of Agrocybe aegerita culture materials has a high nitrogen content, a high contamination rate, and late fruiting; the nitrogen content is too low and the yield is low. The following two formulations are recommended: wood chips 36%, cottonseed hulls 36%, bran 20%, corn flour 5%, tea seed cake 1%, light calcium carbonate 1%, sugar 1%, pH 7-7.5; or Cottonseed hull 87%, wheat bran 10%, lime 2%, sugar 1%, moisture content 56% ~ 60%, pH 7 ~ 7.5.
To improve the finished bagging rate is to cultivate the quality of materials. The culture medium should be fresh and free from mildew. Wood chips should be ripened and sifted. The moisture content of the culture material should be suitable to hold the water in the fingers but not to drop. The second is the production of bacteria bags. Cottonseed hulls and sawdust should be pre-wetted 24 hours in advance and lime stacking and fermentation should be added. Then, wheat bran should be added. The time for bagging up to the stove should not exceed 5 hours. The third is disinfection and sterilization. Put the bag into a regular pressure cooker, usually 2500-3000 bags per stove, not too much. When sterilizing, do “attack head, control, and tail protectionâ€, and make the time for heating up to 100° C. as short as possible. After the temperature reaches 100° C., keep it for 16 to 18 hours to completely sterilize. The fourth is culture of bacteria. Agrocybe aegerita is sensitive to light and temperature. The culture of strains should be carried out under relatively constant temperature and dark conditions. The temperature should be controlled at 22-26°C. The culture room should be checked every 10 days to remove contaminating bacteria. Fifth, inoculation of bacteria bags. After sterilization, the material temperature is cooled to below 30°C and placed in an inoculation box for inoculation. Minimize bacterial bag damage.
Scientifically arranged bagging season mycelia of Agrocybe aegerita can grow at 5～35°C, and the optimum temperature for fruit body differentiation is 22～26°C. The fruit body below 20°C grows slowly, has a slow tidal transition, short stipe, and low yield; The fruit body at 28°C grows quickly and is easy to open, affecting the quality. In Gaobu County in the middle and late of May and in late September, it is most suitable for the formation and growth of Agrocybe chaenomeles fruit bodies. Pushing forward 55-60 days is a reasonable bag-making period. It is usually arranged in mid-March and mid-July.
Insufficient prevention and control of pests adopts physical and biological control, and no chemical control is required for the fruiting period. Focus on environmental sanitation, timely dispose of spent bacteria bags, sterilize the interior and exterior of the mushroom house, and supplement water with clean tap water. Insect nets, black light, water immersion method (in the mushroom base before or after the harvest to the bacteria tube irrigation, the water surface is 1 to 2 mm above the material surface, immersed for 2 days after the drain) combined method of pest management.
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