Main cultivation techniques for High yield of volvariella volvacea

1. Choosing the right strain is the key. It is best to select a new generation of improved varieties, too many generations of varieties, easy to cause quality degradation, yield decline. At the same time avoid using different types of straw mushroom strains mixed cultivation.

2. Properly handle the culture materials. Straw is the main medium for cultivating volvacea. In order to improve the quality of the culture medium, the straw can be beaten or crushed with stone when the straw is spread in the sun, and the straw can be pressed many times to make the straw loose and soft and easy to absorb enough water. The bed can be pressed more tightly, which is beneficial to fermentation. The straw is soaked. Stacking retting, and adding 1% lime water to pour fermentation for 2 to 3 days, is conducive to killing straw miscellaneous bacteria, accelerate straw decomposition. Finally, the bacteria bed is compacted.

Third, prepare good bacteria bed soil and increase auxiliary nutrients. 50kg of fertile soil (dried and crushed), 1.5kg of fine bran, 100g of sugar, 500g of lime, 30kg of water, and then sprinkle the water solution of sugar and lime into the mixture of fine soil and fine bran, mix it into a ball by hand, and then cover it with plastic film for fermentation for one week to become fungus bed soil.

"The formula of supplementary nutrients: 40 kg of 10 cm long straw, 8 kg of rice bran, 1.25 kg of gypsum powder, 0.5 kg of lime, 250 g of sugar, mix well with water, and control the moisture content at about 70%. This nutrient material can not be fermented too ripe, short straw to have a certain tension, that is, loose and elastic. The ratio of nutrient to culture medium is 1:10, which can make straw mushroom obtain enough nitrogen and carbon. After planting, it is necessary to step on the straw bed for many times, plug the uneven grass into the straw pile, compact and compact the bacterial bed, which is beneficial to fermentation and growth of straw mushroom mycelium.

4. Adjust the climate of bacteria bed. On the fourth day after stacking, mushroom water should be added once to prolong fermentation and fruiting period, and the top surface temperature of the stack should be kept at about 36℃ to facilitate fruiting. The suitable humidity of straw mushroom is: the moisture content of the fungus bed is 60%-70%, and the relative humidity of the air is 85%-95%. Therefore, in the season when the temperature is below 30 ° C, in order to keep warm and moisturize, indoor doors and windows should be reduced as much as possible. Mushroom bed in the outdoor do not often open plastic film, temperature above 30℃ should pay attention to ventilation, indoor ventilation more than 2 hours a day. In addition, attention should also be paid to light, factor entity formation and development, must have scattered light, otherwise the fruit body is not easy to form or atrophy and decay.

5. Harvest in time. Harvesting should be timely, it is best to pick early in the morning, noon weather is hot, not picking mushrooms. When the mushroom base is wider, the top slightly pointed pagoda forms an oval shape, the mushroom body changes from hard to loose, the color changes from deep to light, and the coating breaks through or just breaks through, it is more suitable to harvest at this time. In case of dense clusters of straw mushrooms, it should be collected at the "nest end" when most of them are suitable for picking, so as to avoid the death and decay of immature straw mushrooms caused by the turnover of individual straw mushrooms. When harvesting, it must be picked clean without residues. If there are mushroom feet, they should be dug up in time with a knife after picking. Otherwise, the residual stems of mushroom feet will rot and flow yellow water on the mushroom bed, resulting in atrophy and decay of the mushroom buds next to them, affecting the yield of the whole mushroom bed, thus causing losses. After harvesting mushrooms once, spray 5 kg of cold boiled water and a vitamin B1 injection on the mushroom bed with a sprayer to prevent the mushroom buds from shrinking and decaying.