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云南省是我国自然环境最复杂的省份之一。由于其特殊的自然环境,造成云南省自然灾害众多,其中霜冻是仅次于水灾、旱灾居第三位的主要灾害。一般年份也有“十多万亩受霜冻、低温的影响”~①。云南霜冻不像其他省份只有早霜和晚霜会造成灾害,其各月均有发生,让人防不胜防,对不同作物均有可能造成很大损害。因此,研究云南的霜冻、低温灾害对于防灾、减灾及指导农业生产均有积极意义。为方便读者,特将有
Yunnan Province is one of the most complicated provinces in China’s natural environment. Due to its special natural environment, many natural disasters are caused in Yunnan Province. Among them, frost is the third major disaster after floods and drought. The general year also has “more than ten thousand mu frost, the impact of low temperature ” ~ ①. Unlike other provinces in Yunnan, frost only causes early frost and night frost to cause disasters. It occurs in all the months and makes people unable to guard against any possible damage, which may cause great damage to different crops. Therefore, the study of Yunnan frost, low temperature disaster for disaster prevention, disaster reduction and guidance of agricultural production are of positive significance. For the convenience of readers, there will be special