去冬今春,我国广大农村遭受严重的干旱和低温冻害,特别是北方冬麦区,遇到了近些年来罕见的冻害死苗现象。不少读者给我刊寄来有关冬小麦越冬期间死苗原因的调查分析材料或稿件,由于篇幅有限,仅择其部分摘登供参考。 Last winter and spring, the vast rural areas of China suffered severe drought and low-temperature frost damage, especially in the winter wheat area in the north, encountering the phenomenon of frostbite and dead frost rarely seen in recent years. Many readers have sent me articles about surveyed materials or manuscripts about the causes of dead seedlings in the winter wheat overwintering period. Due to the limited space, some of them are only selected for reference.