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霜冻是我省主要的农业灾害之一。我省地理位置偏南,北高南低的地势减弱了北方寒潮的影响,霜冻灾害比起北方各省虽然要轻一些,但每年仍有部份地区的小春作物和经济作物遭受不同程度的危害,例如一九八二年十二月二十七日发生的全省性强霜冻,使我省的小麦、蚕豆和甘蔗都受到了严重损失。了解和掌握我省霜冻发生的规律及其防御措施,是做好防霜防冻工作的重要前提。一、霜冻的形成原因从秋季到春季这一段时期,当夜间近地面层温度降低到摄氏零度以下时,空气中的水汽在物体的表面上
Frost is one of the major agricultural disasters in our province. The geography of our province is slightly southward and the elevation of North High South lowers the impact of northern cold spell. Although the frost disaster is lighter than the northern provinces, there are still some small areas of small spring crops and cash crops suffering from different degrees of harm each year, For example, the province’s strong frosts on December 27, 1982, caused serious losses to our province of wheat, broad beans and sugar cane. Understanding and mastering the law of frost occurrence in our province and its defensive measures is an important prerequisite for frost and frost prevention. First, the reasons for the formation of frost From autumn to spring this period of time, when the night near the surface temperature is reduced to below zero degrees Celsius, the water vapor in the air on the surface of the object