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倒春寒是浙江省双季早稻育秧期的主要农业气象灾害 .倒春寒的发生会影响秧苗的品质 ,对早稻生产危害极大 .根据 196 1～ 1996年 4月全省日平均气温资料 ,分析了浙江省倒春寒的时空分布规律 ,结果表明 ,浙江省倒春寒出现频率东部高于西部 ,北部高于南部 ;倒春寒主要发生在 4月的前三候 .掌握倒春寒发生规律 ,采取育秧工厂化、旱育秧等生产方式 ,可避开倒春寒危害
The late spring cold is the main agricultural meteorological disasters during the double-season early rice seedling growing season in Zhejiang Province.The occurrence of late spring cold will affect the quality of the seedlings, which is very harmful to the early rice production.According to the daily average temperature data of the province from April 1996 to April 1996, The results showed that the occurrence frequency of late spring in Zhejiang province was higher in the east than in the west and higher in the north than in the south, while the late spring was mainly occurred in the first three months of April. Grasp the law of late spring cold, adopt the production methods of nursery plantation, , Can be avoided late spring hazards