冷害在水稻生产中是导致水稻减产的最大非生物灾害之一。黑龙江省属寒地气候,低温冷害发生频繁,每3～5年便会发生一次冷害。近年损失最大的冷害发生在2002年,导致水稻大面积减产,因为黑龙江是最大的水稻商品粮生产基地,所以这种大面积冷害的发生对水稻商品粮的生产影响巨大。选育耐冷性强的水稻品种是黑龙江省水稻育种的主要目标,在选育耐低温水稻品种的 Chilling injury in rice production is one of the largest non-biological disasters that led to the reduction of rice production. Heilongjiang Province is a cold climate, cold chilling occurs frequently, every 3 to 5 years there will be a chilling injury. In recent years, the most damaging chilling occurred in 2002, resulting in a large-scale reduction of rice production. Because Heilongjiang is the largest rice commodity grain production base, the occurrence of such large-scale chilling injury has a huge impact on the production of rice grain commodities. Breeding of cold-tolerant rice varieties is the main goal of rice breeding in Heilongjiang Province. In breeding low-temperature resistant rice varieties