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为改善烟田小气候,延长烤烟生育期,于2000～2003年在浏阳开展了烤烟(春烟)大穴深栽营造大田微气候的研究。试验以烤烟保护地育苗技术为依据,应用“温室效应”的原理,在早春低温季节,人工营造大田烤烟苗穴小温暖空间,改善大田栽期烤烟生长环境,延长了烤烟大田生长期,提高了烤烟产质量。研究表明:大穴深栽技术防御低温、冷害效果显著,同时移栽期较常规栽培提早10～20d,大田生产期延长8～15d。
In order to improve the microclimate of tobacco fields and extend the growth period of flue-cured tobacco, a large-scale deep-seeding cultivation of flue-cured tobacco (spring smoke) was conducted in Liuyang from 2000 to 2003 to study the field microclimate. Based on the principle of “greenhouse effect”, the experiment was based on the principle of “greenhouse effect ”, in the early spring low season, artificially create a small warm space for the foothills of Daejeon flue-cured tobacco to improve the growth environment of flue-cured tobacco in the field and prolong the growth period of flue- Improve the quality of tobacco production. The results show that the technology of deep pothole planting has a significant effect of preventing cold and cold damage, and the transplanting period is 10-20 days earlier than conventional cultivation and the field production period is prolonged by 8-15 days.