目前,我国西南烟区的大多烟草种植在高海拔烟区,烟苗移栽后易受到低温等环境因素的胁迫,缓苗期长,生长速度缓慢,导致烟草前期易受到冻害、病毒病、炭疽病等影响;中期因高温高湿,导致根茎病害的发生;后期阴雨低温,导致赤星病与野火病等叶部病害的暴发,进而严重阻碍和制约优质烟叶的可持续发展。烟草“小苗小孔敞口深栽”是在贵州省提出的“小苗井窖式移栽技术”的基础上进一步改进、并根据重庆巫山、奉节、黔江等地的实际情况提出的一项现代烟草栽培新技术。通过该技术的施用,可提前移栽时间,免去大棚育苗的剪叶和病害防治、练苗等管理的劳作,缩短烟苗移栽的缓苗期,实现早生快发,提前采收期,减少前期病毒病、烟蚜 At present, most of tobacco in southwest China’s tobacco growing area is in high-altitude tobacco-growing areas. After transplanting, the tobacco seedlings are vulnerable to environmental factors such as low temperature. The slow seedling growth period and slow growth rate lead to pre-tobacco susceptibility to frost damage, viral diseases, anthrax Disease and other effects; mid-term due to high temperature and humidity, leading to the occurrence of rhizome diseases; late rainy and cold, leading to brown spots and wildfire and other leaf disease outbreaks, thus seriously hinder and restrict the sustainable development of quality tobacco. Based on the actual situation of Wushan, Fengjie, Qianjiang and other places in Chongqing, the tobacco is further improved on the basis of the “seedling cellar transplanting technology” proposed by Guizhou Province A new technology for modern tobacco cultivation. Through the application of the technology, the time for transplanting can be advanced, the leaf cutting and disease prevention and control of seedling in the greenhouse can be avoided, and the management of seedlings and other management work can be shortened, Reduce pre-virus disease, aphids