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葡萄原产温带和亚热带,为喜温植物。北方栽培,越冬期间常遭受不同程度的冻害,究其原因,除与品种和栽培技术措施有关外,生长前期温度低,某些发育阶段推迟;生长季节遭受冰雹和病虫的危害;初霜早降,缩短了生长期;初冬低温来得早,且较一般年分低;越冬期间某一段时间绝对温度比较高,葡萄植株呼吸作用旺盛,大量消耗了树体中的有机质;冬季积雪少,又有强寒流的袭击,气温急剧下降,低温延续时间长等,上述各种因素,均易使葡萄园遭受冻害。
Grapes native temperate and subtropical, for the thermophilic plants. Northern culture, often during the winter suffered varying degrees of frost damage, the reason, in addition to the variety and cultivation techniques and measures, the pre-growth temperature is low, some developmental postponed; growth season suffer from hail and pests; early frost Decreased and shortened the growth period; early winter low temperature came earlier, and lower than the general year; during a certain period of time during winter the absolute temperature is relatively high, vigorous respiration of grape plants, consume a large amount of organic matter in the tree body; winter less snow, and There is a strong cold attack, a sharp decline in temperature, low temperature prolongation of a long time, the above factors are easy to make the vineyard suffered frost damage.