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通过对黄淮麦区１９８０ 年以来晚霜冻的调查分析，找出了晚霜冻的物理学及生物学特点，提出了晚霜冻的防御对策。
Through the investigation and analysis of night frost in Huanghuai wheat area since 1980, the physical and biological characteristics of late frost were found, and the defensive countermeasures of night frost were put forward.