Management of Spring Mushroom in Lentinus edodes substitute cultivation

The spring mushroom management of Lentinus edodes must be managed according to the local climate characteristics. The spring climate in the south of the Yangtze River is characterized by low temperature, overcast and rainy, and humid. When the daily average temperature is more than 12 ℃, spring mushroom management can be carried out. Spring is the peak period of outdoor Lentinus edodes, and its output accounts for 30% and 60% of the annual output of Lentinus edodes (depending on the variety and stick-making time sooner or later). Before management, water replenishment should be carried out according to the number of mushroom batches, water loss and pollution.

(1) after 2-3 batch harvesting in autumn, the water content of bacterial sticks decreased gradually with the increase of the number of mushrooms, lengthening of management period, sawdust rot and nutritional consumption. at the beginning of spring, the water content of bacterial sticks was only 30%-35%, and the mycelium was semi-dormant. Therefore, it is necessary to replenish water in order to meet the water demand during the formation of primordium. Water can be replenished when the temperature is stable above 10 ℃ in spring. The method is as follows: put a film in the ditch first, pierce the cross section of the rod with 8 # iron wire or 6.5mm steel bar with grinding tip diameter, the hole depth is 25mm 35cm, and the two holes with serious water loss can be pierced (if not stabbed, it will affect the water absorption speed of the rod) Then, after the piercing hole, the bacterial stick and the ditch are discharged in parallel with 3 layers of 4 layers, and then a layer of waterproof film is padded on the stick, which is encircled into a pool or barrel shape. First, water is released into the upper layer of the film in the shape of 25 centimeters, and the Han Nei bacterial stick is uniformly pressed by the gravity of the water. Then the bacterial stick in the lower layer is soaked in water, and the above does not need to be pressurized and fixed, and the bacterial stick can all be immersed in water. If the bacteria stick floats on the water surface after immersion, it will not achieve the goal of uniform water absorption. When the bacteria stick is soaked in water for the first time in early spring, due to the loss of too much water, the immersion time should be controlled at 8 to 12 hours, and the ditch water should be drained after each soaking, so that the free water on the surface of the stick can be dried, carefully moved back to the mushroom bed for routine management. Recently, in some places in Fujian, in order to save handling labor, the power supply is introduced into the mushroom shed, electric sockets are not set at a fixed point, and a small self-priming (centrifugal) electric pump is used to absorb water into the soaking ditch at one end and sprinkler at the other end, although the one-time investment is higher, but it saves a lot of labor and management costs.

(2) according to the characteristics of continuous spring rain and high air relative humidity, the mushroom rod should dilate the ceiling sunshade after replenishing water, increase the temperature and sunshine in the shed, increase the temperature difference between day and night, and induce the formation of primordium. The air pressure is low in spring, in order to meet the oxygen demand of Lentinus edodes development, the bamboo arch on the border shelf can be increased by 0.3 meters, and the film cover can even be opened on overcast and rainy days to enhance ventilation. After the sting, thunderstorms are frequent, so it is necessary to prevent the mushroom body from dripping too much water, which makes it difficult to bake. When covering the film, pay attention to ventilation on both sides or both ends, do not cover it tightly, and change it immediately after the weather clears up. A large number of late-maturing varieties of Lentinus edodes occur after the beginning of spring, and the peak period of mushroom production is from March to April. After each batch of Lentinus edodes is harvested, the hyphae are restored for 7 or 10 days, and then replenish water, promote buds and produce mushrooms in accordance with the above methods, over and over again. The temperature fluctuates greatly in late spring, so it is necessary to prevent high temperature and humidity and carry out cooling work. Can thicken the ceiling sunshade, remove thin around sunshade hanging curtain. The management of Lentinus edodes in spring was finished at the end of April or early May (depending on the local temperature) in the low-altitude mushroom farm, and other edible fungi such as Auricularia auricula were planted after clearing the field, so that the mushroom shed could be used every year. The strain of Lentinus edodes cultivated in high altitude mountain area often lasts until June, but the yield is very low in the later stage because of the serious contraction of the rod.