一、呼盟是低温冷害发生频率较高地区农作物在整个生育期或某个生育阶段,由于低温寡照,热量不足,气温低于作物所需求的临界温度,使作物生长缓慢,延迟发育。当早霜来临时,作物尚未成熟,造成减产。这种情况称为低温冷害。地处大兴安岭的呼伦贝尔盟,高海拔、高纬度,大陆性气候,是我国和自治区纬度最北的水稻种植区域,属于北方寒冷稻作区。气候特点:冬季 First, the Cochrane League is a high frequency of chilling damage Crops in the entire growing season or a growing stage, due to low temperature, lack of heat, the temperature is lower than the critical temperature required for crops, crop growth slow, delayed development. When the early frost comes, the crop is not yet ripe, resulting in a cut in production. This condition is called chilling damage. Located in the Greater Hinggan Mountains, the Hulun Buir League, the highest altitude, high latitude and continental climate, is the northernmost rice planting region in latitude of China and the autonomous region, and belongs to the northern cold rice region. Climate characteristics: winter