The danger of mold infection in the external support nutrient bag of morel mushroom and solution mea
In recent years, with the industrial advantage of high selling price and big profit, more mushrooms are planted in large area all over the country, and some friends who used to plant other mushrooms or never planted mushrooms have got involved in morel mushroom industry. Because the cultivation habit, key technology, pest management of morel mushroom is not fully mastered, especially the morel mushroom external support nutrient bags infected with mold, often let many growers helpless, so the mushroom less or extinct situation often happens.
The external support nutrition bag provides nutrition for the mycelium in the soil to meet the needs of the later mushroom production. As we all know, all high yielding plots, the nutrient bags are eating very well, after the mushroom season, the nutrient bags will be at least half of the weight lighter than when they were just placed, and breaking open the nutrient bags will also find that all the wheat is left with empty skins, which proves that the starch, sugar and other nutrients inside the wheat grains have been absorbed by the morel mushroom. The cause of low yield or crop failure is the nutrient bag infection mold or mycelium did not eat into the material, a large area of dead mushrooms and white mold, spider web disease and other infestation is also the main reason for low yield or crop failure.
1. Improper handling of disinfectant powder supplies
Some growers think that spreading some quicklime can play the role of disinfection, leading to too many miscellaneous bacteria in the field, and when the nutrient bag is placed in the field, soon the mold will quickly invade the bag from the nutrient bag opening to cause infection. In fact, the main role of lime is to regulate the pH of the soil and has a certain insect repellent effect, for the prevention and control of mold is almost ineffective, and some special agents according to the mulching production susceptible to fungal, bacterial characteristics and design, combined sterilization, mutual coordination and complementarity, on a variety of soil-borne diseases have a good preventive and therapeutic effect.
2. The quality of nutrition bags is not up to par
Such as dryness, humidity, pH is not appropriate, after the ingredients are not timely bagged on the pot sterilization leads to wheat and other culture material sour, wheat bagging is too tight, etc., will cause the nutrient bags placed after the mycelium do not eat material, mycelium does not enter the bag at the same time, the miscellaneous bacteria will quickly into the bag, and finally cause a large area of nutrient bag infection.
3. weak mycelium vigor
Mycelium vitality is also weak is one of the reasons why mycelium does not eat material. After sowing in high temperature season, the ground mycelium encounter high temperature, watering on the ground mycelium damage.
4. Mulch thoroughly
Mulching should be thorough, this issue has been ignored by many growers. The purpose of mulching after sowing is to cover the mycelium in the soil layer. If the mulch is not thorough, the bare strain is easy to lose water, resulting in weak or non-germinating strain; at the same time, the bare strain is very easy to be infiltrated by a variety of mold spores in the environment, triggering the enrichment and spread of miscellaneous bacteria, and then triggered a large area of infection in the later nutrition bag.
Nutrient bag contamination has a great impact on the yield of late morel mushroom, first of all, the nutrient bag is not enough, the yield will definitely be discounted, at the same time, because the nutrient bag infected with mold can not provide nutrition to mycelium in time, resulting in insufficient nutrition, very easy to cause the original base or small mushroom when suffering from climate fluctuations when the day folded and died, affecting the yield. Before mushroom emergence, if the proportion of infected nutrient bags on the mushroom bed is found to be more than 70%, it means that the planting of the season is a complete failure, because there is almost no way to save the severely contaminated nutrient bags. Soon after placing the nutrient bags, when there are sporadic nutrient bag infections on the mushroom bed, these miscellaneous bacteria spores will spread around with the wind and airflow, which will easily cause a large area of infection on the bed in the whole greenhouse and lead to greater harm.
The correct prevention and control method is to immediately spray the molds on the mushroom bed (such as wood mold, gypsum mold, red and white streptomyces, spider web disease, etc.) with special chemicals for local spraying, which can quickly kill the sprouting mold spores, cut off the way of mold transmission and control its growth and spread.