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1991年4月30日至5月1日,我区气候受强冷空气侵入影响,出现了几十年未遇的大幅度降温,最低气温下降到-3～-6.4℃,地面最低温度达-5.6～-11.1℃,低温持续5～7个小时。使各种果树的花朵、花蕾、幼果以及葡萄萌芽、新梢均遭到严重冻害。全区果树受冻面积25.8万亩,其中成龄果园10万亩,“七五”初期新发展的
From April 30 to May 1, 1991, the climate in our district was affected by the intrusion of strong cold air. There was a drastic temperature drop in the past few decades. The minimum temperature dropped to -3 ~ -6.4 ℃ and the lowest ground temperature reached - 5.6 ~ -11.1 ℃, low temperature for 5 to 7 hours. So that a variety of fruit trees flowers, buds, young fruits and grapes buds, shoots have been severely frostbite. The area of fruit trees frozen area of 25.8 hectares, of which 10 million hectares of mature orchards, “75” early new development