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广西桂南地区1976年及1981年晚稻在抽穗扬花期遇到较强的寒露风天气,灌浆后期进入腊熟期间,又受到一次比较明显的低温危害(日平均气温降至10—15℃,连续三天以上),这两年晚稻普遍大幅度减产。为探明两次低温对晚稻的危害程度和危害机制,我站利用国产人工气候箱模拟1981年桂南出现的两次低温过程,作了较详细的试验观测,并取得初步结果。
During late 1976 and 1981, late rice experienced severe dew and windy weather in Guangxi and Guangxi during the flowering and flowering stages. During the late filling period, it experienced a relatively low temperature damage (the average daily temperature dropped to 10-15 ° C, continuous Three days or more), late rice generally have substantially reduced production in these two years. In order to find out the harm degree and harm mechanism of two low temperature on late rice, I used the domestic artificial climatic box to simulate the two low temperature processes in Guinan in 1981, and made more detailed experimental observations and achieved preliminary results.