Freezing disasters in the north mostly occur in spring and autumn, while those in the south mostly occur in winter. Try to analyze the reasons.

Crops in northern winter stop growing or enter dormancy, so the harm is less; Crops in spring and autumn are still in the growing period, so it is very harmful. (2 points) There are certain agricultural production activities in the south in winter, so the freezing disaster is more harmful; The temperature is relatively high in spring and autumn, and the influence of winter wind is relatively weak, and the cooling rate is small. (2 points)

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