When cultivated, the mycelium grows weakly and slowly. The main reason is: lack of nutrients culture materials. The enzymes secreted by the mycelium of the mushroom can break down the cellulose in the wood, but cannot directly decompose the lignin. Therefore, artificial cultivation must be a reasonable mix of nutrients in the culture material, so as to meet the needs of the growth and development of the mushroom; in particular, when using sawdust or other alternative cultivation materials for large-area cultivation, 10% to 20% of fine rice bran should be added or Wheat bran and nitrogen nutrients. The culture material should neither be too wet nor too dry. If the culture material is too wet, the water and gas will not harmonize, the mycelia will not reach the bottom of the bag (bottom), or the mycelium will spread slowly; if the culture material is too dry, the mycelium will grow slowly and become slender. Uneven packing of bags (bottles), too tight too loose can also affect mycelial growth. The specific cause of poor mycelial growth should be identified and appropriate remedial measures should be taken.
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