Selenium-rich additive for anti-season field-cultivated mushroom and application thereof

Abstract

The invention relates to a selenium-rich additive for anti-season field-cultivated mushroom and an application thereof. The additive is prepared by taking sawdust of 20-40 meshes as an adsorbent and active carbon of 40-60 meshes as a sustained-release agent in combination with sodium selenite and zinc sulfate, and the preparation comprises the following steps of: preparing sodium selenite and zinc sulfate into an aqueous solution; uniformly mixing and stirring the uniformly-mixed sawdust and active carbon with the selenium solution; and stacking for 1.5-2 hours, and naturally drying. The selenium-rich additives accounting for 0.8-1% and 1.5-2.5% of the drier weight respectively are added into the compost and cultivation material of the second-level and third-level strains of mushroom. Through the invention, the needs for selenium element in the whole growth period of anti-season field-cultivated mushroom can be met, and the mushroom can fruit in May to November; the solid additive is slowly-released and long-acting, has good dispersibility, can be easily mixed with the solid compost of edible mushroom, and can promote mycelial growth, reduce stem rot and improve the stress resistance and output of the mushroom; and by adopting the additive, the cultivation time in a cultivation bag is shortened by 4 days in average, the squaring time is shortened by 2 days in average, the selenium content in the fruiting body is over 10 times that of the control group, the biological conversion rate is improved by 11.4%, and the rate of high-quality mushroom is 5.9% higher than that of the control group.

Description

technical field [0001] The invention relates to the technical field of a selenium-enriched edible fungus additive, in particular to a selenium-enriched additive for off-season ground-grown shiitake mushrooms and its application. Background technique [0002] Using shiitake mushrooms as a carrier, through the absorption and utilization of mycelium, the technology of converting inorganic selenium into organic selenium, making it a selenium-enriched health care product has developed rapidly in recent years, and the cultivation technology of edible mushroom shiitake mushrooms is also improving day by day, but the off-season Selenium-enriched fresh shiitake mushrooms grown in the ground cannot be marketed in summer, so effectively solving the problem of not producing selenium-enriched fresh shiitake mushrooms in summer high temperature seasons has become an important research topic. At present, in the batching process of shiitake mushrooms and edible fungus cultivation materials,...

AI Technical Summary

Problems solved by technology

Application No. 201010197137.2, the cultivation method of selenium-enriched shiitake mushrooms is based on the currently known bag-filling formula and cultivation management of various shiitake mushroom culture media, as long as the selenium salt solution is added when the culture medium is mixed, and the culture medium is controlled. The concentration of the selenium salt of the bagged material, thereby controlling the selenium content of the shiitake mushrooms with this medium as a nutrient, all the above-mentioned selenium additives are made into an aqueous solution and added, and the amount of the solution added is based on experience to grasp the dry humidity of the mixing material, so usually It is not easy to stir evenly and it is not easy to operate, and the inconsistent amount of each batch of materials will easily lead to differences in the amount of additives added, resulting in uneven distribution of additive components in the compost; it cannot meet the demand for selenium in the whole growth period of shiitake mushrooms, and shiitake mushrooms contain selenium The quantity cannot be stabilized within the expected range and affects the quality of cultivated shiitake mushrooms

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