1. Melasma: It is a bacterial disease caused by Pseudomonas. After the onset of disease, the mushroom mushroom caps appear oval brown or dark brown spots, the beginning of the needle-like shape, expanded to a diameter of 2-4 mm, the edge is neat, and sometimes the cap crack.
Control methods: The key is to control the appropriate temperature and humidity. When watering the mushroom house, do not sprinkle water directly on the fruit mushroom body and do not spray it with cold water. The humidity in the mushroom house should not be longer than 90% for a long time. It depends on the change of weather and watering. The sunny watering should be light, diligent and fine; the rainy days should be less sprinkled or not watered. Increase the ventilation after each watering and then cover the film. During the mushrooming period, the indoor temperature should be adjusted to less than 17 degrees Celsius. Mushrooms should be removed in time after the onset of disease, and sprayed with 100-200 units per milliliter of agricultural streptomycin or bleach 600 times liquid.
Second, rust spot disease: caused by Pseudomonas disease. It is mainly impregnated with mushroom mushroom caps. The needles are initially shaped and then expanded into sesame seeds. Although the edges are not neat, the lesions can be combined into irregular rust spots.
Control methods: To prevent the occurrence of rust spot, do not sprinkle directly on the fruiting body when spraying the mushroom house. Ventilate it immediately after spraying. The relative humidity of the indoor air should not exceed 95% for a long time. After the water has dried. At the early stage of disease, germs should be prevented from spreading to healthy fruiting bodies and sprayed with 50% carbendazim 800-fold or 100-200 units of agricultural streptomycin per ml.
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