以吉宏9和吉农大853为供试品种，研究了不同还田方式对水稻秸秆腐解情况、土壤性状、杂草发生情况及水稻性状的影响。结果表明，水稻秸秆秋季水耙浆还田处理的CH₄排放总量约为秸秆春季还田处理的1/2，秸秆失重率相比春季还田处理提高7.1%，秸秆断裂拉力为春季还田处理的83.8%。连续2年秸秆秋季水耙浆还田后，土壤有机质含量增加6.1 g/kg，有效磷含量也有显著提升，相比秸秆春季还田处理，地力培肥效果更加明显。相比秸秆不还田处理，秸秆秋季还田处理插秧后大田的禾本科杂草株数明显减少，水稻产量提高4.9%。

The effects of different rice straw returning methods on rice straw decomposition, soil properties, weed occurrence and rice properties were studied with rice varieties Jihong 9 and Jinongda 853. The results showed that the total CH₄ emission of rice straw returning to field in autumn was about 1/2 of that of straw returning to field in spring, the weight loss rate of straw was 7.1% higher than that of straw returning to field in spring, and the breaking force of straw was 83.8% of that of straw returning to field in spring. After the straw was returned to the field in autumn for two consecutive years, the content of soil organic matter increased by 6.1 g/kg, and the content of available phosphorus also increased significantly. Compared with rice straw returning to field in spring, the effect of fertility cultivation of rice straw returning to field in autumn was more significant. Compared with the treatment without straw returning to the field, the number of gramineous weeds in the treatment of straw returning to the field in autumn decreased significantly after transplanting, the rice yield increased by 4.9%.