几年来,我县双季稻面积逐年扩大,提高了复种指数和单位面积产量,由于双季稻生产与气象条件关系十分密切,特别是三熟制,季节紧迫,对气象条件要求严格,往往出现温度“二低头”的矛盾,特别是在连作晚稻抽穗扬花期秋季低温矛盾更为突出,有的年份如1972年,由于秋季低温来临之时正遇到连作晚稻抽穗扬花造成连晚空秕率增加,影响了产量。因此认真做好秋季低温预测工作,防止低温危害,不仅有经济价值,而且有政治意义,现将我县有关秋季低温气象条件进行分析及1977年预测供各级领导参考。 Over the past few years, the area of ​​double-cropped rice in our county has been expanded year by year, raising the double-cropping index and yield per unit area. Due to the close relationship between double-cropping rice production and meteorological conditions, especially in the three-cropping system, the season is tight and the meteorological conditions are strict, Temperature “two bow” contradictions, especially in late autumn as the contradiction between flowering and flowering of late rice is more prominent in autumn, and some of the year, such as 1972, due to the arrival of autumn when the cold heading is even continuous cropping late heading for even the late 空 rate increase , Affecting the yield. So do a good job of low temperature forecast in autumn, to prevent low temperature damage, not only economic value, but also political significance, now I County County autumn meteorological conditions for analysis and prediction of 1977 for all levels of leadership for reference.