关键词: 菌渣, 有机质, 土壤速效养分, 水稻产量

Abstract: In order to investigate the effect of edible fungus residue on soil fertility， dynamic changes of soil nutrients contents and rice growth were monitored in a pot experiment. Results showed that， at rice harvest， soil available phosphorus content increased significantly under application of the highest rate of edible fungus residue，while soil organic matter content increased significantly under combination of the highest rate of edible fungus residue with high rate of chemical fertilizer. Meanwhile soil available potassium content increased significantly under combination of the highest rate of edible fungus residue with medium or minimum rate of chemical fertilizer. However， soil available nitrogen content showed no difference among all treatments. Leaf SPAD index became greater with the increasing rate of chemical fertilizer application， but it appeared that leaf SPAD was little affected by edible fungus residue application. The highest rice grain yield and economic coefficient were gained under combination of the highest rate of chemical fertilizer with high rate of edible fungus residue．

Key words: edible fungus residue, soil organic matter, soil available nutrients, rice yield