关键词: 葡萄, 主产区, 春霜冻, 风险分析

Abstract: In recent years, spring frost occurred frequently in China, which had a serious impact on grape industry and became one of the main meteorological disasters endangering grape production. Based on the daily minimum temperature observation data of 607 meteorological stations in China from 1958 to 2019, the occurrence days, frequency, station number ratio and disaster risk of spring frost disaster in main grape producing areas were analyzed by using statistical and spatial analysis methods. The results showed that the average days and frequency of frost in different grape growing areas were very different in the past 60 years. The frequency and average number of frost occurrence in spring were the highest in northwest and southwest mountain regions, and the lowest in southern regions. The intensity of spring frost was obvious in different regions. The intensity index of light frost tended to be smaller from north to south, while that of medium frost and heavy frost were generally smaller. The spatial distribution characteristics of the disaster causing factor index in the main grape producing areas were generally higher than those in the southern regions. The high-risk areas were mainly distributed in the northwest region and the north-east region, and the risk-free areas were mainly distributed in the southern region. According to the results of risk zoning, it can provide scientific basis for disaster prevention in main grape producing areas.

Key words: Grape, Main production area, Spring frost, Risk zoning