The waste mushroom media biochar were added to the medium of vegetable nursery to test the growth of seedlings this year. The results showed that the 2% and 4% waste mushroom media biochar were better in the cauliflower seedlings. In sweet pepper seedlings, the addition of 4% and 6% of the waste mushroom media biochar performed better. Based on this, the formula for plug seedling cultivation should be gotten on.

Three kinds of biochar materials, rice husk charcoal, fruit tree charcoal, and waste mushroom media biochar, were used as soil modifiers for sweet corn and fruit tree pear cultivation. The yield of sweet corn from high to low was 3% rice husk biochar, 2% rice husk biochar, 1% fruit tree biochar, 3% waste mushroom media biochar, and 2% waste mushroom media biochar. The yield of pear from high to low was 1% waste mushroom media biochar, 2% rice husk biochar, and 2% fruit tree biochar. The fruit weight and total yield of bitter gourd were the highest at 3% waste mushroom media biochar, followed by the control group, 2% and 1%.

Currently, more than 200 thousand metric tons of the waste media are produced each year, and they are accumulated continuously which occupies a lot of space and produces foul smell. And some illegal disposal seriously pollutes the environment and causes waste of resources.

This plan has established a prototype of a recycling mechanism, but the cost of making biochar is relatively high. It is necessary to develop carbonization treatment technology or expand the scale to reduce costs. Only by developing other value-added products can the utilization efficiency of waste mushroom media biochar be improved.