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研究结果表明 :在赣南海拔 2 90～ 750m单季稻区种植烤烟 ,实行烟稻轮作是可行的 ,是耕作制度的重大改革 ,烟稻轮作的配套技术已臻于完善。单季改双季 ,充分利用光温资源 ,增加复种指数 ,每公顷新增产值 192 89 2 5元 ;解决了粮烟争地矛盾 ;赣南高海拔单季稻区有利于烟叶充分发育和营养积累 ,产量提高 5 9% ,上等烟提高 6 6个百分点 ,化学成分比较协调 ,比双季稻区植烟每公顷增值 2 782 95元 ,效益显著。今后赣南优质烟基地可以逐步向所界定的单季稻区发展
The results show that it is feasible to grow tobacco in the single cropping rice region of 2 90 ~ 750 m above sea level in southern Jiangxi province, and it is a major reform of farming system. The matching technology of tobacco rotation has been perfected. Single season changed double season, make full use of light and temperature resources, increase the multiple cropping index, new output value of 192 89 25 yuan per hectare; Solve the contradiction between grain and liquor dispute; Gannan high altitude single cropping area is conducive to the full development of tobacco and nutrient accumulation, The yield increased by 59% and the finest smoke by 66%. The chemical composition was more harmonious than that of the double cropping rice area and the value added was 2 782.95 yuan per hectare of tobacco in the double cropping rice area. In the future, the high-quality tobacco bases in southern Jiangxi will gradually develop into a single-season rice area as defined