作物低温冷害指标及风险评估研究进展

介绍了我国现有的作物低温冷害指标,并对比分析了其优缺点,同时介绍了国内外有关低温冷害风险评估研究进展.国外有关作物低温冷害方面的研究,主要集中在冷害机理研究方面,而在冷害指标、冷害监测预测和风险评估等方面的研究较少.国内主要从低温冷害出现的风险概率、温度变异系数出发进行了风险评估,并建立了综合风险指数,但结合产量灾损方面的风险评估还未开展.

Advances in Researches on Indexes and Risk Assessments of Crop Cold Damage

Various indexes of crop cold damage are introduced and compared on the basis of published research findings at home and abroad, and the advantages and disadvantages are analyzed. The progresses in the researches on relative cold damage risk assessment at home and abroad are introduced. The analysis shows that the researches on crop cold damage abroad are mainly concentrated on the mechanisms of crop cold damage, but the studies on cold damage index, as well as the monitoring, prediction, risk assessment of chilling damage, are comparatively less. Further research in future is necessary. The researches about damage risk assessment are mainly based on the probability of cold damage and temperature variance coefficient, so to establish a comprehensive risk index in China. The research findings in the risk assessment combined with crop production loss have not yet been reported.