Recently, many growers have come up to inquire: Is the production of oyster mushrooms now more and more low? Compared with previous years, there are too many differences. To this end, the author conducted a survey and found that the following problems exist:

Most of the serious environmental pollution in cultivation is cultivated in greenhouses year after year. Deterioration of environmental conditions and incomplete disinfection are the main reasons for the reduction in yield of Pleurotus ostreatus. According to tests, the number of miscellaneous bacteria at the new site was 63.95 per square meter, 95% of bacteria, and 150 colonies per square meter. After the first cultivation, the number of miscellaneous bacteria will be 20 times higher than before. These miscellaneous bacteria will control the growth of Pleurotus ostreatus to some extent. The more cultivation times, the lower the yield of Pleurotus ostreatus. In addition, the metabolites of Pleurotus ostreatus also have some control over its growth. Therefore, it is best to change the cultivation site every 2 to 3 years or to change the cultivation season in a planned manner. Can also imitate the southern model, local bacteria, off-site mushroom.

Raw material issues At present, the main raw material for the cultivation of Pleurotus ostreatus is cotton seed husk. According to the latest information, due to the continuous advancement of science and technology, the equipment of cotton factory is continuously updated, the utilization rate of products is getting higher and higher, and the nutrient content of cotton husks is increasing. The less, and the cotton shells are also divided into many levels, such as large shell linters, middle shell cashmere, and small shell lint. Except professional outdoor, the vast majority of growers do not know the secrets of these, think that as long as it is Cotton shell on the line. The shell of cotton hulls with short shells has low water content and low nutrient content. The second tidal mushroom is difficult to issue due to lack of water in the material; while the small shell of cotton husk with small shells has high moisture content, nutrient-rich, and mushroom production. Higher, the difference between the two production is about 20%.

The quality of strains in the agricultural production, good seedlings are well-known reason. In the production of Pleurotus ostreatus, the quality of strains is the key to directly affecting yield and benefits. It is difficult to visually identify the quality of strains. Two or two strains of bacteria that are overgrown with medium have no difference from the outside, but their technical content and experimental input are completely different. In addition to professional outdoor use, the vast majority of growers purchase three-grade species, while the majority of units and individuals producing three-level species are scattered in rural areas. The source of the bacteria and the production status are relatively chaotic, blindly expanded, and the phenomenon of adulteration very common. Edible mushroom mycelium has the characteristics of unlimited growth. The more the number of cell division, the higher the degree of aging, the more the variation will be; the more the number of expansion, the greater the amount of production, the higher the degree of aging, the more the variation. Some people bought their mothers from scientific research units for their own benefit, and they used them all year round. This is one of the reasons for the decline in yield of Pleurotus ostreatus.

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