【摘要】 为探索吉林省西部半干旱区适宜玉米生产的秸秆还田模式，于2020-2021年在吉林省白城市开展研究。设置秸秆离田、秸秆覆盖、秸秆碎混还田秸秆深翻还田4个处理，探究不同秸秆还田方式对玉米生长发育及产量的影响。结果表明，从玉米大喇叭口期到成熟期，所有秸秆还田处理玉米生长均快于秸秆离田处理，其中秸秆深翻还田处理玉米生长发育最快，增产效果最佳。与秸秆离田处理相比，秸秆深翻还田处理玉米株高、茎粗、SPAD值、叶面积指数、净光合速率、干物质量和产量分别平均增加5.9%、10.1%、11.6%、10.2%、9.1%、7.7%和7.7%。在吉林省半干旱区推广应用玉米秸秆深翻还田方式，可以实现秸秆还田条件下玉米增产稳产。更多还原

【Abstract】 In order to explore the straw returning mode suitable for maize production in the semi-arid area of western Jilin Province, the study was conducted in Baicheng City, Jilin Province from 2020 to 2021. Four treatments were set up, including straw leaving field, straw mulching, straw crushing and straw deep tillage, to explore the effects of different straw returning methods on the growth and yield of maize. The results showed that from the big bell stage to the mature stage of maize, the growth of maize in all straw returning treatments was faster than that in straw leaving treatment. Among them, the growth and development of maize in deep straw returning treatment was the fastest and the yield increase effect was the best. Compared with the straw removal treatment, the plant height, stem diameter, SPAD, leaf area index, net photosynthetic rate, dry matter accumutation and yield of maize in the straw deep tillage and returning treatment increased by 5.9%, 10.1%, 11.6%, 10.2%, 9.1%, 7.7% and 7.7%, respectively. The promotion and application of maize straw deep ploughing and returning to the field in the semi-arid areas of Jilin Province can realize the increase and stable yield of maize under the condition of straw returning.更多还原