Cassava stems are rich in cellulose and starch. In Guangdong, as long as a fresh cassava stalk is left in the cool environment in front of and behind the house for10.5 days, red, green or black bacteria will be produced at its end. Therefore, cassava stalk is an excellent base material for cultivating edible fungi. Practice: ① First, knock the cassava stalks clean, cut them into small pieces that are easy to dry, and expose them to the sun. (2) Put the dried cassava stalks into a pulverizer and pulverize them into pieces as big as longan seed and as small as chaff (fresh pulping will produce pulp). (3) Wet the broken materials with water, put them into a cauldron, add a small amount of water and cover them, and cook them with slow fire until they are completely sterilized (don't turn over halfway). (4) Scoop the cooked bar from the clean plastic film laid on the ground and let it spread naturally for filling. ⑤ Use a customized plastic film cylinder (diameter 13- 15cm, length about 50cm), with both ends open and one end temporarily tied, and put it into a bag. ⑥ Leave 10cm at the mouth of the bag, and fasten it with a round bamboo hoop (0.5- 1cm in width and about 5 cm in diameter). Turn the pipe end of the plastic pipe upside down and fix it with bamboo hoop, fix it with mat or rope to form an opening, and then fix the other side with bamboo hoop as an opening. ⑦ transport a short rod-shaped culture medium tube (30 cm long) with holes with a diameter of 5 cm on both sides to a light-proof, light-leaking and moisture-retaining aseptic mushroom room, place a row of single-layer 24-standard bricks (the length depends on the pattern of mushroom room) under it, stack the culture medium tube neatly on the bricks, and use a code with a height of 1- 1.2 m (both ends are also ⑨ The optimum growth temperature of Pleurotus ostreatus is 15- 18℃. If the quality relationship is not considered too much, it can grow in the range of 4-30 degrees, and the time of fruiting at both ends of the base pipe is also determined by temperature. Indications: In the late stage of multiple harvesting of Pleurotus ostreatus, the bamboo knife can be used to pierce the end of the base pipe to make Pleurotus ostreatus grow fully, which has achieved the highest benefit. The basic method of answering "how to plant Pleurotus ostreatus with cassava residue" How to sow Pleurotus ostreatus, how to spray water and humidify it, how to control light, how to control temperature, how to sterilize it and how to harvest it. These all need very specific and detailed introduction, and it is difficult to describe them here. Friends had better go to the Science and Technology Bookstore to buy one or several books about the cultivation of various edible fungi for guidance, and then visit and learn the specific experience of some mushroom cultivation professionals, which is the only way to master the mushroom cultivation technology comprehensively and skillfully. ~ ~ I spent several hours writing here, and I can only give a superficial description of my experience. Please forgive me.