冻害是果树生产中存在的一个突出问题,最近几年,黄河故道地区的很多葡萄园都发生过不同程度的冻害,特别是1989年冬到1990年春,极端最低温度达-23℃,黄河故道地区葡萄冻害更为严重,郑州郊区的巨峰葡萄园有80%的植株发生了不同程度的冻害。郑州果树所的葡萄品种资源圃有25%的品种地上部分冻死,少数品种由于春季萌蘖出现才免于灭绝。 Frost damage is a prominent problem in the production of fruit trees. In recent years, many vineyards in the old course of the Yellow River have suffered different degrees of frost damage, especially from the winter of 1989 to the spring of 1990 with an extreme minimum temperature of -23 ℃. Grapefruit damage is more serious, Zhengzhou Jufeng Vineyards in the suburbs of 80% of the plants had varying degrees of frost damage. Zhengzhou fruit tree grape varieties 25% of the varieties of resources on the ground part of the frozen to death, a few varieties due to the emergence of spring spur emergence from extinction.