松溪县地处闽北,历年冬季的最低气温在-3～-7.6℃之间,柑桔常受到不同程度的冻害。1991年12月底气温突降,最低气温达-7.1℃,致使我县柑桔严重受冻。笔者在冻后调查,发现冻害程度除与柑桔品种、树势、土壤水分等因素有关外,还与地面覆盖有一定关系。 Songxi County is located in northern Fujian, the lowest temperature over the years in winter between -3 ~ -7.6 ℃, citrus often suffer different degrees of frost damage. At the end of December 1991, the temperature suddenly dropped and the minimum temperature reached -7.1 ℃, causing serious freezing of citrus in our county. The author after the investigation in the frozen and found that the degree of frost damage in addition to citrus varieties, tree potential, soil moisture and other factors, but also with the ground cover a certain relationship.