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武威地区位于我省河西走廊东部,属大陆性气候,春季少雨多风,气温不稳,常易在果树开花期发生霜冻冷害,致使大部花器受害,降低座果数和产量,严重时可造成果园无收。据气象资料记载:1962年5月8日的严重霜冻,地面温度降至-6.7℃;1971年的严重霜冻,受冻作物面积达10万余亩。1981年5月2日,由于寒流南下,地表温度下降到-6.4℃,且低温(0℃以下)延长达4昼夜,大大超过了苹果、梨等花器所能忍受的最低温度,对果树造成的冻害,是建国以来最为严重的一次。
Wuwei is located in the eastern part of Hexi Corridor in our province. It belongs to the continental climate. In spring, it is rainy and windy, and its temperature is not stable. Frost chilling injury often occurs in flowering stage of fruit trees, causing damage to most flowers and reducing the number and yield of fruit trees. Orchard confiscated. According to meteorological data records: May 8, 1962 severe frost, the ground temperature dropped to -6.7 ℃; 1971 severe frost, frost crop area of 100,000 mu. May 2, 1981, due to the cold south, the surface temperature dropped to -6.4 ℃, and low temperature (below 0 ℃) extended up to 4 days and nights, far beyond the apple, pear and other flowers can withstand the lowest temperature on the fruit trees Frost damage is the most serious one since the founding of the People’s Republic.