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本文在1987年5～9月对3月下旬、4月中旬的两次寒潮侵袭进行了调查,找出冻害的原因,并提出防冻措施。
In this paper, from May to September 1987, two cold wave influxes were investigated in late March and mid-April to find out the cause of frost damage and put forward antifreezing measures.