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辽宁省水稻宽床开闭式旱育苗是在1981年引进日本启闭式纱网育苗的基础上,并结合我省的实际情况加以改造,逐步发展起来的.1985年我省中部地区大力推广开闭式旱育苗,插秧面积达110万亩.开闭式育苗与常规育苗相比有三项改革,一是变窄床为宽床;二是变单幅膜覆盖为双幅膜覆盖;三是变四边通风炼苗为上通风炼苗.实践证明,用这种方法培育的秧苗素质好,出苗早、成苗率高,秧苗长势均匀一致,利用率高.这种方法成本低,经济效益高,方法简单,便于推广.
Liaoning Province, wide-bed rice dry bed open-type sterile nursery was introduced in 1981 on the basis of the Japanese open and close gauze nursery, and in light of the actual situation in our province to be transformed and gradually developed in 1985 in central China to promote open Closed dry nursery, transplanting area of 1.1 million mu. Open-type nursery and conventional nursery has three reforms compared to the first one to narrow the bed for the wide bed; the second is a single film covering double-film coverage; the third is to change four sides Ventilation Harmonic ventilation ventilation practice has proved that using this method to cultivate the seedlings good quality, early emergence, high seedling rate, seedlings grow uniform, high utilization rate of this method is low cost and high economic efficiency, methods Simple, easy to promote.