多保护方式跨熟期栽培技术研究试验结果表明 ,采用双棚旱育苗技术较生产上单棚大棚旱育苗技术可增加有效积温 6 6 .78℃ ,结合适当合理密植、中优施肥及使用促早熟药剂等方法的应用可延长生育期 5～ 6 d,对于实现目前特定生态条件下水稻品种的再一次越区种植 ,进一步提高单产是有效 Multi-protection method Cross-maturing cultivation technology research results show that the use of double shed dry nursery technology than the production of greenhouse shed dry nursery seedling technology can increase the effective accumulated temperature 6 6 .78 ° C, with appropriate and reasonable close planting, Zhongyou fertilization and use of early precocity Application of pesticides and other methods can extend the growth period of 5 ~ 6 d, to achieve the current ecological conditions of rice varieties under another cross-planting, to further improve the yield is effective