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引言小麦冻害是农业气象灾害之一,其机理和指标国内外均有不少研究。我省过去认为小麦冻害于冬季发生,主要影响北部麦区,指标多借用于外地。随着生产发展和品种更新等,原有认识及指标已不敷生产需要。为此,在以前研究基础上,从一九七九年开始,采用地理播种、分期播种等方法,进行平行观测,借助典型年的分析和调查,对冬麦冻害进行了初步研究,确定了分蘖节最低温度的观测方法,提出冻害按时
Introduction Wheat frost damage is one of the agricultural meteorological disasters, and its mechanism and indicators have a lot of research both at home and abroad. In the past, the province thought that the frost damage of wheat occurred in the winter and mainly affected the northern wheat area. The indicators were mostly borrowed from the field. With the development of production and variety updates, the original understanding and indicators have been insufficient for production needs. To this end, based on the previous studies, from 1979, using the method of geographic sowing and sowing, parallel observation was carried out. Based on the analysis and investigation of typical years, the frost damage of winter wheat was preliminarily studied, and the tiller The method of observing the minimum temperature of the section proposed freezing on time