Causes and Prevention of Abnormal Mushrooms in Greenhouse

1. Hollow white root mushroom stalks become loose and white, and when they are severe, they form hollow. Cause: During the fruit body growth stage, due to air drying and high temperatures. When the relative humidity of the air is less than 85%, the water content of the cover soil is relatively low. When the air temperature in the mushroom room is above 18° C., the mushroom grows fast and the water evaporates quickly, causing the water absorbed by the mushroom body to be less than the transpiration water. Control methods: Spray water in time during the day so that the relative humidity of the air is kept at 90%. After the water is sprayed sooner or later, timely ventilation is needed to reduce the temperature of the mushroom shed and keep it at 14 to 18°C. 2. The hard-opening of the parasol screen and the screen handle were separated and the opening of the umbrella was premature, resulting in poor commerciality. The reason of the occurrence: At the beginning of the mushrooming, sudden encounter of low temperature, sudden drop in high temperature, large temperature difference, mushroom house humidity caused by low. Control methods: to strengthen the mushroom shed insulation measures, pay attention to weather changes, narrow the temperature difference, and maintain the relative humidity of the air in the mushroom room within the appropriate range. 3, dead mushrooms mushrooming wilting yellow, stop the growth of the final death, ranging from a total of death, while the weight of death into a dragonfly. Cause: 1 The temperature is too high. At the beginning of autumn and early spring, the temperature is high, resulting in backflow of nutrients and lack of nutrition. 2 The growth of mycelium after covering the soil is too fast, the mushroom is denser, and the nutrient supply is not enough, resulting in malnutrition and death of the young mushroom; 3 In time, oxygen is insufficient and the carbon dioxide concentration is high. 4 The temperature in the mushroom shed is high (more than 20°C) and the humidity is too high (more than 95%). After the water is sprayed, the ventilation is not timely and the surface area of ​​the mushroom is water, causing the mushroom to die of hypoxia and suffocation. Control methods: master the sowing time, prevent the mushrooming in the hot season; the sowing amount should not be too large to prevent the mycelium growing too prosperous, the fruiting too dense, resulting in lack of nutrients; the water content of the earth layer should not be too high, suppress the mushrooming part, and avoid Mushroom too dense, while spraying water cooling to timely ventilation to prevent mushroom surface water. 4, thin skin open mushroom mushroom stem slender, thin cover, early open umbrella. Cause: The mushrooming period, mushroom room temperature above 20 °C, the air relative humidity is too large, poor ventilation, coupled with the bed mushroom out of the dense, out of fast, competing for oxygen and nutrients caused. Control methods: Cultivation materials should be thoroughly fermented, timely ventilation after spraying, to prevent the mushroom surface area of ​​water, keep mushroom shed temperature suitable. 5, scale mushroom mushroom cracks produce scales, forming scale mushrooms. Cause: The temperature inside the mushroom room is below 14°C, the humidity is too small, and the temperature difference and the dry and wet difference are too large. Control methods: Maintain appropriate air relative humidity during the shed, enhance insulation measures, avoid excessive temperature difference, and prevent sudden wind smash. 6. The undifferentiated fruit bodies have mushroom buds and the fruiting bodies are undifferentiated. There is no cap and mycorrhiza, only one mycelium group is formed. Causes: 1 Hyphae grow to a certain extent, environmental conditions suitable for the formation of mushroom buds, and later not suitable for fruit body differentiation caused. 2 If pesticides are used improperly, excessive use of pesticides will form undifferentiated fruit bodies. Control methods: Before the planting, clean the house around the house, completely disinfect the mushroom house, prevent the occurrence of pests and diseases, reasonably and safely use pesticides to prevent overdose.

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