Effects of Adding Mushroom Residue on Aggregates Composition of Different Texture Soils

Constant temperature culture experiment was conducted to study the effect of adding mushroom residue on the composition and properties of soil water-stable aggregates with different soil textures. The results show that adding mushroom residue mainly increased the content of 1-2 mm agglomerates in sandy loam soil and the content of 3-5 mm agglomerates in medium clay soil. By adding 1% mushroom residue to the medium clay for 30 days, the properties of the aggregates were significantly improved, while when the proportion of mushroom residue reached to more than 15%. The average weight diameter and geometric average weight diameter of the aggregates did not increase significantly with the increase of the cultivation time. When the proportion of mushroom residue in the sandy loam soil reached to 15% and 30%, the average weight diameter and geometric average weight diameter of the aggregates gradually increased with the increase of the cultivation time. Cultivating soil with mushroom residue can effectively improve the condition of soil aggregates, and the improvement of the finer-textured soil is stronger than the coarser-textured soil.