黑龙江垦区地处高纬度寒温带气候区,作物生育期短,热量资源缺乏;又有3～5年一遇的周期冷害威胁着水稻生产。水稻插秧田栽培技术向旱育壮秧即稀植早插、早发为中心环节的综合高产栽培体系发展。在育苗技术上由湿润水育苗改为旱育苗,为提高秧苗素质,增强抗逆性,促进发根,从而达到返青快、分蘖多、成穗率高的目的,为高产 Heilongjiang reclamation area is located in the high latitude cold temperate climatic zone, short crop growth period, the lack of caloric resources; and 3 to 5 years once the cycle of chills threaten rice production. Rice cultivation techniques to transplanting rice seedlings to nursery nursery that early planting sparsely inserted, early hair as the central link of the comprehensive high-yielding cultivation system development. In the nursery technology by the wet aquaculture seedlings to dry nursery seedlings, in order to improve the quality of seedlings, enhance resistance, and promote hair root, so as to achieve fast return, tillering, spike rate for the purpose of high yield