辽宁省位于东北的南部,在东径118°53′—125°46′,北纬38°43′—43°26′之间。境内多高山丘陵,地势自北向南,由东、西向中部倾斜,复杂的地理环境带来我省各地气候的差异。杂交稻具有很强的增产优势,一般较常规稻品种可增产一至二成。为扬长避短,合理利用气候资源,充分发挥其增产优势,取得更大的经济效益,因此,确定杂交稻的栽培界限及最优栽培区域,具有很大的生产实际意义。本文通过试验、统计分析,对辽宁省杂交稻栽 Liaoning Province is located in the south of the northeast at an east longitude of 118 ° 53’-125 ° 46 ’and latitude 38 ° 43’-43 ° 26’N. The territory of many hills, topography from north to south, from east to west tilt to the central, complex geographical environment brought about differences in the climate across the province. Hybrid rice has a strong yield advantage, generally more than conventional rice varieties can yield one to two percent. In order to avoid weaknesses, make rational use of climatic resources and give full play to its advantage of increasing yield, and achieve greater economic benefits, it is of great practical significance to determine the cultivation limit and the optimal cultivation area for hybrid rice. Through experiments, statistical analysis, Liaoning Province, hybrid rice planted