Cap for cultivation bottle for brown beech mushrooms (hypsizygus marmoreus) and method for cultivation and harvest of brown beech mushrooms

A cap for a cultivation bottle for brown beech mushrooms, comprising:

• a cylindrical member that is fitted onto a wide-mouth part of a cultivation bottle;
• and
• a bowl-shaped member that is separate from the cylindrical member and that is placed on the cylindrical member, wherein:
• the cylindrical member includes:
• a large-diameter cylindrical part that covers and is fitted to an end edge of the wide-mouth part and an outer surface in a vicinity of the end edge,
• a small-diameter cylindrical part that has a first opening with a smaller diameter than the large-diameter cylindrical part and that is positioned toward a center of the large-diameter cylindrical part, and
• a connecting part that connects an outer peripheral edge of the large-diameter cylindrical part with the small-diameter cylindrical part;
• the bowl-shaped member includes:
• an upper cylindrical part that has a second opening with substantially a same diameter as an internal diameter of the first opening, and
• a corrective part rising upward in a bowl shape from a peripheral edge of the second opening;
• the bowl-shaped member is placed on the small-diameter cylindrical part;
• and a total height of an inner surface of the small-diameter cylindrical part and an inner surface of the upper cylindrical part is from 6 mm to 30 mm.