Hyphae are harmful and consume nutrients. Thickening of the bacterial skin layer, so that the normal respiratory mycelium is inhibited, tough skin will prevent the formation and growth of the fruiting body primordia. cause 1 The mushroom room is not properly set, such as too few windows, and the interior light is too dark. 2 The culture material has high moisture content or high air humidity. 3 The ventilation is too low, especially when the mycelium begins to thicken to increase ventilation. 4 Tilt the film too light, or tilt the film too short, or add too much nutrients such as corn flour. Prevention coup When the hyphae of shiitake mushroom are still white, 2 cm, and they do not fall down, and there are uneven hyphae, open the film and vent for one to several days until the growing bag is not sticky. The next day does not have to be tilted so that the moisture on the surface forces the mycelium to fall flat and change color. When it is still not lying down, open the film again, open the door and window, wait until the material surface is dry, and brush it with a row of brushes to disturb the surface mycelium and force it to turn over. Or air dry and spray it with 5% lime clarified water, dry it, dry it, cover it with a film, then it can be turned and turned. The bearing structure, fixed film systems and installation of this greenhouse is relatively simple. And due to it, raw material and manufacturing costs are affordable. Except the high strength woven film is higher, other kinds of antidrop film are economical. In general, the comprehensive cost of film greenhouse is lower 30% ~ 50% than the same size and specifications of the other types of greenhouse. Single Span Greenhouse,Greenhouse Film,Tunnel Greenhouse,Plastic Film Greenhouse JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com