Auricularia auricula planting: why is the black fungus deformed?

Why is black fungus deformed? Is there any way to prevent and cure it? Please guide the common deformities of black fungus are fist ear, tumor ear, yellow and white ear and single ear, the detailed introduction and prevention methods are listed as follows: first, the disease primordium of Auricularia auricula is not differentiated, the ear piece does not grow, and the spherical primordium increases gradually. also known as fist ear, spherical ear, cultivation is said not to open film. The causes of fist-shaped fungus are as follows: 1, ventilation when coming out of the ear; 2, lack of light; 3, small temperature difference, too deep and large cut; 4, low temperature during differentiation. Prevention and control methods of fist-shaped fungus: the ear bed should not be too deep and the grass curtain should not be too thick; during the differentiation period, ventilation should be strengthened in the morning and evening to stimulate the differentiation; reasonable arrangement of production season, early spring is not too early to cut, autumn planting is not too late to cultivate, prevent the differentiation period from being too cold. Second, tumor-like auricularia auricula diseased ear piece with tumor, verrucous, often accompanied by insect pests and ear phenomenon. The reasons for the formation of Auricularia auricula are as follows: 1. As a result of the comprehensive effect of high temperature, high humidity and lack of ventilation, insect pests and bacteria grow together and aggravate the disease of tumorous ear. 2. Spraying micro-fertilizer and hormone drugs in the season of high temperature and high humidity can also induce tumorous ears. Auricularia auricula prevention and control method: seasonal arrangement, avoid high temperature and humidity season, fruit body growth period should pay attention to ventilation, in order to inhibit the growth of germs and pests, should let the sun oblique light shine on the ear bed, high temperature season with careful spraying of chemical drugs. Third, the yellow and white fungus diseased ear piece is light in color, yellowing and even tends to be white, thin. The reasons for the formation of yellow and white fungus: 1, lack of light, poor ventilation; 2, harvested too late, ear piece too mature; 3, bad species. Prevention and control methods of yellow and white fungus: grass curtain should not be too thick, more ventilation in the morning and evening; timely harvest to ensure quality; select high-quality bacteria in production, prohibit fake and inferior bacteria or bacteria with too much transfer (bag) tube for production. Fourth, a single piece of diseased auricularia auricula is not a flower, three or two single pieces are clustered, often the shape of the ear piece is not correct. The reasons for the formation of single ear are as follows: 1, poor species; 2, overheating or aging of mycelia in cultivation bags; 3, improper formulation of culture medium, malnutrition or excess nitrogen sources (wheat bran, soybean powder, etc.); 4. The raw material is too fine, the bag is too tight, and the culture medium is impermeable. Single ear control method: strictly control bacteria, do not buy fake and shoddy bacteria, do not use grain bacteria, and prevent radiation (such as railway safety inspection facilities). Culture bacteria to prevent overtemperature, prevent mycelium from eating slowly and prolong the culture period, strict ingredient formula, do not need too fine raw materials, bagging should be standard. Click to get more Auricularia auricula planting techniques, click to get more edible fungus planting techniques