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近几年低温冷害活动频繁,对连晚杂交稻生产威胁很大。1981年,由于低温危害而导致杂交稻大幅度减产。而在生产实践中,人们往往根据前一、二年的经验来指导当年生产,没有认真分析气候的年际变化,因此遭失败。探明花期低温冷害的指标,对进一步挖掘杂交稻的增产潜力,充分利用自然气候资源,有着十分重要的意义。
In recent years, cold chilling activities are frequent, threatening the late hybrid rice production. In 1981, due to low temperature damage led to a substantial yield reduction of hybrid rice. In production practice, people often guide the production of the year according to the experience of the previous year and the year, failing to carefully analyze the interannual change of the climate. The identification of indicators of chilling injury in flowering stage is of great significance to further excavate the yield potential of hybrid rice and make full use of natural climatic resources.