通过2 a大田定位试验研究了不同腐熟剂用量处理对玉米秸秆的腐解效果和对土壤基本性质玉米产量的影响。结果表明，施用腐熟剂可提高秸秆腐解率8.9%～13.1%，土壤容重较无腐熟剂处理平均降低4.49%；显著提高了土壤有机质、有效磷、全磷、速效钾、缓效钾的含量。秸秆还田+腐熟剂能改善土壤理化性状，提高玉米产量，且以秸秆还田+腐熟剂60 kg/hm2处理效果最佳，玉米产量2019、2020年较常规种植分别提高了1 566.67、1 990.48 kg/hm2。适合在西北黑垆土地区应用。

The effects of different treatments of decomposer dosage on the decomposition effect of corn straw and basic soil properties as well as corn yield were studied through two years of field positioning experiments. The results demonstrated that the straw decomposition rate of straw could be increased by 8.9%~13.1% by appling the decomposing agent， and soil bulk weight was reduced by 4.49% compared with the treatments without decomposing agent. The contents of soil organic matter， available p， total P， available K and slow available K were significantly increased. The straw returning+decomposing agent could improve soil physical and chemical properties and increase corn yield， and straw returning + decomposing agent 60 kg/hm2 had the best effect， and corn yield increased 1 566.67 kg/hm2 and 1 990.48 kg/hm2 compared with conventional planting in 2019 and 2020， respectively. It is suitable for application in northwest black loessial soil area.

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