Efficient cultivation of Pleurotus ostreatus with corncob

It is estimated that every 100 kilograms of corncob can produce 100-150 kilograms of fresh Pleurotus ostreatus, and the bioconversion rate is 150% 250%. Material selection and processing. Choose the fresh and mildew-free corncob and put it in the sun for 2-3 days and crush it to the size of corn kernels without sieving. Preparation of culture materials.

Reference formula: corncob 79%, bean straw 15%, lime 4%, gypsum 1%, calcium superphosphate 1%, urea 0.3%. Preparation method: first dissolve lime and urea in water, then mix into the material, the ratio of water to material is 1 ∶ 1, after turning and mixing evenly, the pile is stuffy for 2 hours. Heap fermentation. Lay plastic film on the ground and pile it into a pile with a width of 1.5m, a height of 1m and an unlimited length, hit several bottom holes randomly down from the top of the pile, then cover it with plastic film or straw curtain to accumulate and ferment, test the temperature of the pile after one day, if it reaches more than 60 ℃, keep turning the heap for 6 hours, turn the outer material into the inside, turn the inner material to the outside, then pile it up, ferment to 60 ℃, maintain it for 12-24 hours, and then the fermentation is completed.

Loading and vaccination. When the material temperature is below 30 ℃, it can be bagged, using a polyethylene barrel bag of 50 × 25 cm, inoculated according to the inoculation method of three layers of material and four layers of bacteria, that is, one layer of bacteria at each end and two layers of bacteria in the middle, the amount of bacteria is inoculated according to 3 ∶ 2 ∶ 2 ∶ 3, the sowing amount is 10% of the material weight, and the material bag is fastened and accumulated to both sides and upward, with a height of 1.5-2 meters.

Mycelium cultivation. 2 days after sowing, the feed temperature began to rise, pay attention to the change of material temperature every day, turn the pile again after 2-3 days, and turn again after 6-7 days to prevent the material temperature from rising above 35 ℃. When the material temperature rises to 32 ℃, you should open the doors and windows in time, spray water to the ground, reduce the accumulation layer, evacuate the bacterial bag, make the heat in the bag dissipate quickly, in order to reduce the material temperature, the temperature of the bacterial bag should be controlled at about 25 ℃, rotate the bacterial bag 180 degrees in about 10 days, make the bottom stagnant water inversely permeate, facilitate uniform bacteria, pour the bag again in about 20 days, put the mycelium growing bags together, put the poor ones together, and pick out the contaminated ones. If the pollution is light, open the bag and leave it in a cool place to dry for a few days or cover it with lime powder, and the heavy pollution will be buried in the distance. The relative humidity of indoor air is maintained at about 65%, and the mycelium can be filled with mycelium in about 30 days.

Mushroom management. When the material surface is covered with white mycelium, the ties on both sides of the bag can be untied, the mouth of the bag can be rolled out, the ventilation can be strengthened, the room temperature can be kept at 14-18 ℃, and the air relative humidity can be controlled at 85%. Do not spray water during the budding period. When young mushrooms appear, they should be sprayed with a small amount of water. When they grow to the size of broad beans, the number of water spraying should be increased, and the air humidity should be kept at 90%. It can be harvested after 5-7 days under 10-25 ℃. After the first crop of mushrooms was harvested, cut off the residual mushroom fragments, re-spray water to seal the material surface as before, keep the indoor air slightly drier, promote the mycelium growth and accumulation of nutrients, strengthen ventilation and light transmission, and carry out normal management after the formation of the second crop mushrooms. After 2-3 crops of mushrooms, 0.2% Mel 0.3% urea or potassium dihydrogen phosphate can be sprayed. During the whole growth period, the temperature should be controlled at 10-25 ℃, and the humidity should be 80% Mel 95%.

Harvest. It takes about 40 days from planting to harvest of Pleurotus ostreatus. When medium well is capped, the fruiting body is the heaviest and the yield is the highest. Hold the mushroom stalk during harvest, rotate and take it out, or cut the whole cluster from the base with a knife. Do not pull it out hard, so as not to damage the material surface and affect the mushroom production of the following crop. 5-6 crops of mushrooms can be collected in the whole growth cycle.