[目的]改良烟地土壤，解决烤烟连作障碍，提高土地的利用率和产出率，增加农民收入。[方法]通过开展烤烟－红薯套作试验，研究不同套作时间对烤烟产量、质量的影响。[结果]烤烟移栽后25 d扦插红薯单位面积产出率最高，纯收益为118316元／hm2。[结论]烤烟移栽后25 d扦插红薯，更适合烟苕套作，可获得较高的收益，实行烟苕套作不仅能增加复种指数，而且还能有效促进烤烟与其他作物的均衡发展。%Objective] The aim was to improve soil of tobacco fields, solve flue-cured tobacco continuous cropping obstacle, improve use effi-ciency and land productivity, increase farmers’ income.[Method] Through carrying out flue-cured tobacco-sweet potato intercropping experi-ment, effects of time on yield and quality of flue-cured tobacco were studied.[ Result] The results showed that the productivity of sweet potato cuttings after 25 d of flue-cured tobacco transplanting is higher than other processing unit area yield, and the net income is 118 316 yuan/hm2 . [ Conclusion] Sweet potato cuttings after 25 d of flue-cured tobacco transplanting is more suitable for intercropping tobacco and can obtain a higher income, the implementation of tobacco interplanting sweet potato, not only increase multiple cropping index, but also effectively pro-mote the balanced development of flue-cured tobacco and other crops.
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