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上海郊区后季稻生产季节极为紧迫。1969～1978的十年间,亩产量变动在512～732斤之间,平均为612.1±69.4斤,变异系数高达11.3％。1980年由于气候反常,亩产仅360斤左右,低于1963年以来的任何一年。减产的原因主要是低温危害。因此,分析低温对后季稻危害的规律,对于制定适宜的栽培措施,以夺取稳产高产,有一定的参考价值。一、上海郊区低温对后季稻的危害水稻的花粉母细胞减数分裂期和齐穗开花期对低温最敏感。据利容千等观察,水稻减数分裂前期如遇低温,则花粉母细胞败育;
Suburban rice production season in Shanghai is extremely urgent. During the ten years from 1969 to 1978, the change of mu yield was between 512 and 732 kilos, with an average of 612.1 ± 69.4 kilograms and the coefficient of variation was as high as 11.3%. As a result of the anomalous climate in 1980, the yield per mu was only about 360 kilograms, lower than any year since 1963. The main reason for the reduction is low-temperature damage. Therefore, it is of certain reference value to analyze the law of low temperature damage to the late rice crop, and to develop appropriate cultivation measures to seize stable and high yield. First, the low-temperature impact of the suburbs of Shanghai on the late rice Rice pollen mother cell meiosis and flowering at the earliest stage of the most sensitive to low temperature. According to Li Rong and other observations, in case of pre-rice meiosis in case of low temperature, pollen mother cell abortion;