How to prevent the "rotten stick" of black fungus?

How to prevent the "rotten stick" of black fungus? What is the cause of the black fungus "rotten stick"? What are the ways to prevent and cure it? Also ask netizens to help introduce the method of farming network to sort out the reasons and prevention methods of black fungus "rotten stick", listed below for netizens' reference. The reason for causing the "rotten stick" of Auricularia auricula: 1. The improper selection of strains of Auricularia auricula: the strains with good performance were mistakenly cultivated on the section of wood and blindly applied to the bag material Auricularia auricula without adaptability and anti-mildew test. because the strain does not adapt to the environment, the bacteria are slow, causing miscellaneous bacteria infection and rotting. The second reason is that the unsuitable cultivation season of Auricularia auricula is caused by: 1. The inoculation period of Auricularia auricula planted in spring is too late or that in autumn is too early, resulting in overtemperature during bacteria culture and the outflow of cytoplasmic nutrient liquid from mycelium, which is affected by environmental factors. In the cultivation bag with yellow water spitting, other hyphae in the bag were surrounded by mucus, the physiological activity was limited, the hyphae died gradually, and all kinds of miscellaneous bacteria were infected under the condition of high temperature and humidity. 2. The planting season of Auricularia auricula planted in autumn is too late or the inoculation period of Auricularia auricula planted in spring is arranged too early, the temperature is lower than 20 ℃ during the inoculation period, the physiological activity of mycelium is low, and the fungus can not occupy the culture material quickly, which leads to miscellaneous bacteria infection and rotting of fungus sticks. The third reason is that the management of Auricularia auricula is not in place during the culture period: the room temperature of Auricularia auricula rods is relatively low in the early stage, which causes mycelium death in individual inoculation points and infects miscellaneous bacteria; in the later stage, the air temperature rises gradually, coupled with the heat released by mycelium respiration, and when the air temperature exceeds 25 ℃, no timely ventilation and cooling measures are taken, resulting in the phenomenon of burning and stuffing bacteria. In addition, during the period of bacteria infection, poor ventilation can not effectively discharge carbon monoxide and other toxic gases in the culture room, which hinders the activity of mycelium, decreases the vitality and causes miscellaneous bacteria infection. Fourth, the pollution sources around the fungus shed were not cleaned: the old ear shed was used in production, the culture medium, fruiting body and infected plastic bags and other pollutants were not cleaned in the process of ear collection, and the ear shed was not sterilized and became a medium for miscellaneous bacteria propagation; some ear sheds are directly close to the pollution source or the contaminated water is used, which directly produces miscellaneous bacteria, resulting in rotting of bacteria sticks and economic losses. Reason 5, during the ear out period, the water is not well managed: in the auricularia primordium formation period, watering too early, the auricularia primordium did not seal the scratch, water flowed into or infiltrated into the scratch, resulting in infection. During the period of primordium differentiation of Auricularia auricula, the newly formed fruiting body primordia were in the state of spores, the spores ruptured due to excessive water absorption, the mycelium stopped growing at the cut, and the formed fruiting body primordia stopped growing due to the loss of mycelial nutrition supply. cause mold infection or ear flow. Sixth, poor ventilation in the auricularia cultivation shed: improper location of the ear shed, or the cover around the shed is too thick or not ventilated in time, resulting in lack of oxygen in the ear shed, the accumulation of carbon monoxide and other toxic gases, and the decline of the mycelium vitality of Auricularia auricula. The fruiting body grows slowly or stops growing, which provides conditions for the reproduction and growth of miscellaneous bacteria, and the phenomenon of rotten or flowing ear occurs. Reason 7, auricularia auricula is picked in time: the fruiting body of Auricularia auricula is nutritious and colloid, the fruiting body is not harvested in time, the fruiting body becomes thinner and thinner, loses elasticity, not only the quality is poor, but also it is easy to produce mold, causing the phenomenon of flowing ear and rotten ear. The prevention and control methods of "rotten stick" of Auricularia auricula: first, select the fungus strains that are 35-45 days old, with good bacteria, white hyphae, sturdy growth, strong impurity resistance, high yield, large ear slices, thick and dark color. Method 2. Reasonably arrange the cultivation season of Auricularia auricula: the cultivation of Auricularia auricula is divided into spring planting and autumn planting, and the autumn planting inoculation period is generally arranged from August to September. When the air temperature is lower than 30 ℃, the spring planting inoculation period is generally arranged when the ten-day average temperature rises to 20 ℃ and is pushed forward for 60-65 days. Different areas should be advanced or postponed according to the altitude. Method 3. Control the temperature of Auricularia auricula: the mycelium of Auricularia auricula should be carried out in complete darkness, the temperature is 5 ℃ ~ 36 ℃, and the optimum temperature is 24 ℃ ~ 28 ℃. When the temperature exceeds 25 ℃, the culture room should be ventilated at least 2 or 3 times a day, and in the morning and evening. In addition, when the air temperature is lower than 20 ℃, the culture room should be heated in the early stage of fungus infection in spring, so that the temperature can reach 22 ℃ ~ 24 ℃. Method 4. Scientific and rational management: Auricularia auricula has different requirements for temperature, humidity and ventilation at different growth stages. During the formation of the primordium of Auricularia auricula, the relative humidity should be kept at about 80% and properly ventilated. During the period of primordium differentiation, the coral ear buds are quite young and the relative humidity is 80%-90%. If the humidity is too high, you should immediately stop spraying water for 3-5 days, and then water the ear base after a little dryness. In the fruiting body growth stage, in order to promote the rapid growth of the ear piece, it is necessary to adhere to the principle of three dry and seven wet, increase ventilation, dry and wet, and keep the relative humidity between 90% and 95%. Method 5. Harvest Auricularia auricula in time: when the fruiting body ear piece is fully expanded, the edge becomes thinner, the ear root shrinks and eight minutes mature. When harvesting, hold the stick in one hand, hold the root of the ear in the other, rotate gently, do not leave the ear pedicle on the stick, so as not to cause miscellaneous bacteria infection. Click to get more planting techniques of Auricularia auricula