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我县地处浙西南瓯江中游,早稻抽穗扬花期常因受高温伤害而增加空秕率,1978年6月27日至7月22日,连续24天日最高温度在35℃以上,最高值达40.6℃;致使早稻的空秕率高达30—40%,全县损失稻谷达400多万斤.高温伤害是我县早稻生产的一大灾害。为探讨在自然条件下不同早稻品种抽穗扬花期对高温的反应与选择耐高温的品种;我们于1979—1981年进行了早稻抽穗扬花期高温伤害的试验研究。我县是中央气象局统计的全国多高温日地区之一;据丽水地区气象台(北纬28°27′、东经119°55′)
Our county is located in the middle reaches of the Oujiang River in southwestern Zhejiang Province. The earliest flowering period of early rice is often increased due to high temperature injury. From June 27 to July 22, 1978, the maximum temperature was above 35 ℃ for 24 consecutive days. Up to 40.6 ℃, resulting in an empty rice rate of up to 30-40% for early rice and a loss of more than 4 million kg of rice in the county, which is a major disaster in the production of early rice in our county. In order to explore the response of different early rice varieties to high temperature and select the high temperature resistant varieties under different natural conditions, we conducted the experimental study on the high temperature injury during heading and flowering of early rice from 1979 to 1981. My county is the Central Meteorological Bureau statistics over the country one of the high temperature day; according to Lishui meteorological station (latitude 28 ° 27 ’, longitude 119 ° 55’)