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气候变暖，梨树开花期提早，但仍然存在遭受严重霜害的危险。梨花对结冰敏感，受害程度随温度降低而加重。在相同低温下柱头受害率高于子房。采取几种措施配套可望有效防御霜冻。选择开花期晚的品种和采用能推迟开花的措施以躲避霜害；阻止花温降到０℃以下和降低冰核密度可以抗御霜害；促进受害梨花单性结实可以减轻损失。
Climate warming, early flowering pear tree, but there is still the risk of suffering severe frost damage. Pear flowers are susceptible to icing, and the degree of victimization increases with decreasing temperature. At the same low temperature stigma victimization rate higher than the ovary. To take several measures supporting the effective defense against frost. Select the late flowering varieties and the use of measures to delay the flowering to avoid frost damage; prevent the flower temperature dropped below 0 ℃ and reduce the density of ice nucleation can resist frost damage; to promote damage pear pear uniparent can reduce the loss.