冬小麦在冬季和春季前期可能遭到的自然灾害主要是冻害,而冻害的發生是与冬小麦本身品种特性、生育状况、农业技术措施以及冬春不同期間严寒的程度和冷暖的驟变密切相关的。大風和不适量的水分也能在冬季为害冬小麦,但往往是与冻害相結合的。冬小麦遭受冻害的原因低温是使小麦遭受冻害的主要原因。造成小麦冻害有两种情况:一种是机械損伤,这主要是由于 The natural disasters that winter wheat may suffer in winter and early spring are mainly frost damage, and frost damage is closely related to the characteristics of winter wheat itself, fertility, agricultural techniques and the severity of cold and warmth during winter and spring. Windy and unwell moisture can also damage winter wheat, but it is often combined with frost damage. Causes of winter wheat frost damage Low temperature is the main cause of frost damage to wheat. There are two cases of frost damage caused by wheat: one is mechanical damage, which is mainly due to