Spent mushroom substrate, wheat straw and pig manure were mixed at the ratio of 3:5:18 (by dry mass) to prepare a compost matrix (to which no fertilizer nitrogen was added while it was made and the total weight of which was 50.8 kg);
Spent mushroom substrate, wheat straw and pig manure weremixed at the ratio of 3:5:18 (by dry mass) to prepare a compostmatrix (to which no fertilizer nitrogen was added while it wasmade and the total weight of which was 50.8 kg);