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早稻的生长发育速度快慢受气象条件影响较大,特别是抽穗期迟早与日平均气温的关系较密切。由于各年的温度条件不同,抽穗期迟早也不同。因此,可根据这一特点来作早稻抽穗期的预报,以便为农业生产采取各项措施提供依据。一、因子的选择及预报方程的建立资料来源于我站1980-1982年的早稻桂朝二号分期播种材料(共15个播种期)。以播种的日期至抽穗普遍期的间隔天数作为预报对象(y),然后与有关气象要素作相应分析,
The growth and development of early rice is more affected by the weather conditions, especially the relationship between the heading date and the average daily temperature. Due to the different temperature conditions in different years, the heading date will be different sooner or later. Therefore, based on this feature, we can forecast the heading date of early rice in order to provide the basis for various measures for agricultural production. First, the selection of factors and the establishment of the forecasting equation The data are from the sowing date (15 sowing dates) of the early rice Guizhao No.2 from 1980 to 1982 in our station. From the date of sowing to the interval of heading for the general period of forecast as the forecast object (y), and then with the corresponding meteorological elements for the corresponding analysis,