(1) land selection and preparation

Land selection: Choose sandy soil with rich humus and good drainage under the shady forest.

Soil preparation: under the selected tree species, dig a pit with a length of 60 cm, a width of 50 cm and a depth of 45 cm near the root, or plow and rake the land and open a hole for planting.

(2) Planting method

Culture of bacterial material: Cyclobalanopsis glauca, Cyclobalanopsis glauca, Tilia amurensis, Ailanthus altissima and other tree species are selected as bacterial material. Before the new leaves are born, branches or wood segments with a diameter of about 10 cm are collected and cut into fish scales every 3-5 cm. Armillaria mellea is widely distributed in artificially cultivated Polyporus umbellatus in natural secondary forests.

Brown-red fungus strains were collected under the forest as strains, and then the prepared wood segments and collected fungus materials were arranged neatly in March and April according to the ratio of 3∶ 1. Then sow sliced Armillaria mellea on it, cover the gap with humus, and cover it with a layer of leaves, taking the exposed wood section as the degree. According to this requirement, the pile height is about 1 m, the surrounding soil is about10cm, and it is covered with branches, wormwood or leaves. When the weather is dry, water should be properly sprinkled to maintain a certain humidity. Fungi can be cultivated in that year for use in the next year.

Selection of cultivated Polyporus umbellatus: Dig wild Polyporus umbellatus as Polyporus umbellatus. The tender sclerotia above 15g is light in color, grayish brown and broken into small pieces.

Cultivation time: spring and autumn. April-May in spring and 9- 10 in autumn.

Cultivation method: firstly, loosen the bottom of the pit that has been cultivated for two seasons, spread a layer of leaves, put the cultivated fungus material on the bottom every 6 cm or so, put 5-8 pieces of Polyporus between the fungus sticks to make it close to the fish scales where Armillaria mellea grows more, then fill the gaps with leaves, and plant 2-3 layers in each pit according to this requirement, then cover it with humus soil and gently press it. Some also grow polyporus while cultivating fungus materials. In this method, new materials and fungus materials are alternately placed in into the pit, and then planted according to the above requirements, which can shorten the production cycle. The number of bacteria depends on the thickness of bacteria.

(3) Site management

Wild Grifola frondosa in Changbai Mountain

Dragons are strict with soil moisture. When the weather is dry in spring, water it properly. When it rains heavily in autumn, it is necessary to drain water in time to prevent water accumulation. When the temperature is too high in summer, cover branches and wormwood to reduce the temperature in the pit. (commonly used Chinese herbal medicines)

Harvesting and processing

Excavation is carried out in spring and autumn, preferably in the dormant period, usually from the end of 10 to the beginning of April of the following year. When harvesting, gently dig and put it down, with excellent black hard sclerotia as the commodity. The cultivated polyporus umbellatus with light color and soft constitution continued to be cultivated, and its growth ability decreased after three generations of continuous use, so new wild polyporus umbellatus varieties should be replaced. After harvesting, remove sand and other sundries and dry them in the sun.