[Objective] The aim of this paper was to investigate the effects of different transplanting periods on the growth and yield of tobacco plants in different areas of Honghe tobacco-growing areas.[Method]The typical test points of different elevation gradients in Honghe were selected,and field experiment was carried out at different transplanting stages and the data were statistically analyzed.[Result] In 1800-2000m altitude conditions,seedling film transplanting plant in April 10 transplanting was more appropriate.In 1600-1800 m altitude conditions,April 15 transplanting was more appropriate.In 1300-1600 m low altitude,May 10 days transplanting was more appropriate.In 1800-2000 m altitude conditions,April 20 was more appropriate to the conventional transplanting method.In 1600-1800 m altitude conditions,April 25 transplanting was more appropriate.In 1300-1600 m altitude,May 10 transplant more appropriate.[Conclusion]The resuits showed that the Flue-cured tobacco seedling under the film transplanting method was better than that under conventional transplanting method.The optimum transplanting period under the medium and low altitude was 10 days earlier than that of the conventional transplanting stage and the growth period was prolonged.Under the condition of high altitude,two methods seem no difference.Based on the historical data of rainfall,light,accumulated temperature,humidity and yield of transgenic plants,the optima] transplanting period under GIS modal required further research.%[目的]本研究探明红河烟区不同海拔小苗膜下烟适宜移栽期,明确不同移栽期对烟株生长及产质量的影响.[方法]选取红河哈尼族彝族自治州内不同海拔梯度典型试验点,开展不同移栽期田间小区试验并进行数据处理和统计分析.[结果]小苗膜下移栽方式,1800 ～2000 m高海拔条件下,4月10移栽较为适宜;1600～ 1800 m中海拔条件下,4月15日移栽适宜;1300～1600m低海拔高度下,5月10日移栽适宜.常规移栽方式,1800～2000 m高海拔条件下,4月20较为适宜;1600～1800 m中海拔条件下,4月25日移栽适宜;1300～1600 m低海拔高度下,5月10日移栽适宜.[结论]烤烟小苗膜下移栽方法整体表现优于常规移栽方法,中、低海拔段小苗膜下最佳移栽期较常规移栽提前10日并延长大田生长期;高海拔条件下,小苗膜下移栽与常规移栽节令相同.结合移栽期降雨、光照、积温、湿度及烟株产质量等历史数据,基于GIS模型的不同海拔高度条件下最佳移栽区划有待进一步研究.
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