水稻旱床育秧原为北方寒地一季稻区抗低温育秧技术，引入南方双季稻区用于早稻育秧后，为拓宽该技术的应用面，我们于１９９３年对二季晚稻旱床育秧品种、播量、移栽期的产量结构和热量指标进行了研究。研究结果表明：在南昌地区的热量条件下，二季晚稻旱床育秧选用中熟、大穗型杂交稻组合，７月２８日前移栽，秧龄控制在２５ｄ左右，可获得节约专用秧田和增产的良好效果，产量可超过７５００ｋｇ／ｈａ。播量与移栽期的产量关系，以移栽期的作用效果＞播量。早、中、迟三类不同熟期品种．全生育期所需总积温依次为２７３１．６～２７０７．２、２８９０．３～２９４７．１、３０３２．５～３１４０．９℃，早栽早熟系数分别为０．２９、０．４３、０．８６。 Rice dry seedbed nursery seedlings in the northern winter cold-season seedlings breeding technology, the introduction of southern double cropping rice area for early rice seedling, in order to broaden the application of the technology, we were in 1993 on the second season late rice nursery varieties, sowing Volume, transplanting period yield structure and calorie index were studied. The results showed that under the condition of heat in Nanchang area, the middle-late late rice nursery bed selection of middle-maturing and large-panicle hybrid rice combination, before July 28 transplanting, seedling age control in 25d or so, can save special seedling and yield good Effect, the output can exceed 7500kg / ha. Sowing and transplanting of the yield relationship, the effect of transplanting period> sowing. Early, middle and late three different maturity varieties. The total accumulated temperature during the whole growth period was 2731.6 ~ 2707.2, 2890.3 ~ 2947.1 and 3032.5 ~ 3140.9 ℃, respectively, and the precocious early-maturing coefficients were 0.29 and 0.43. 86.