Whether the cultivation and management techniques of Flammulina velutipes are appropriate, determines the yield and quality of Flammulina velutipes:
1. Renovation of wide bags for narrow bag cultivation
Many people think that it is better to cultivate Flammulina velutipes in plastic bags of 25 cm × 50 cm. However, in fact, the wide bag is easy to infect the bacteria, and the fruit buds are easy to bend when the mushroom buds are small, which affects the quality of the product, and does not meet the requirements of small cover, long handle, light color, and tenderness. Therefore, it is better to use a plastic bag of 17 cm × 33 cm.
2, change the autoclave to delay atmospheric sterilization
Flammulina velutipes grows faster on vitamin B1 and vitamin B2 rich culture materials, and the number of powder spores is less. However, vitamin B1 is not heat-resistant, and is easily decomposed when the temperature reaches 120 ° C or higher, so the culture material should be subjected to atmospheric sterilization. In order to ensure that the bacteria are not infected with bacteria, the sterilization time can be extended from 10 to 12 hours to 13 to 18 hours.
3, change the traditional vertical mushroom to the horizontal two-headed mushroom
After the filling, inoculate the plastic film at both ends of the plastic bag and leave a plastic film of about 15 cm each, lightly press it lightly, and then tie the bag to the horizontal position and put about 4 layers of bacteria. This method can not only ensure the quality of the mushroom, but also save the mushroom house area, which can increase the output of the mushroom house per square meter by more than 70%.
4, change the disposable bag to control the bag
When the two-head closed-type sterilizing culture is carried out, since the oxygen concentration in the bag is low, if the mycelial growth is matured and the yellow ball is discharged, the bag is unpacked according to a conventional method, which is bound to affect the growth. Therefore, it is necessary to pay attention to the mycelial growth in the bag at any time. Once the mycelium grows slowly, it is necessary to unpack the bag in time. But at this time, do not open the bag mouth all the time. Slowly open the bag mouth as appropriate. When the mushroom handle is about 8 cm long, spread the bag mouth all the way to ensure the temperature of the mushroom body during the mushrooming process. Humidity and oxygen concentration. In this process, the mushroom body should be prevented from being bent and growing.
5, change the let-off of the mushroom handle to red weak light induction
The Flammulina velutipes fruit body has a strong phototaxis. Therefore, after the bacteria bag is put on the shelf, a 15 watt red bulb can be hoisted every 4 meters above the center of the two rows of walls. The vertical light-inducing bacteria produced by the bulb The silk is bundled in the direction of the light. However, the doors and windows should be shaded at this time to prevent the mushroom body from being sloppy, lodging and bending.
6, change the mushroom period and add nutrients for scientific application
Many mushroom farmers apply growth regulators and other nutrients during the mushrooming period to promote the growth of the mushroom body, but often the effect is not obvious or even inhibit the growth of the mushroom body.
Practice has proved that spraying a concentration of 0.5% triacontanol solution during the mushrooming period can increase yield by more than 17%, but special attention should be paid to the concentration. After harvesting the two stages of mushrooms, inject 500-1000 times of manure water into the bag to increase the yield by 15% to 20%.
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