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为了深入分析嫩江地区粮食大幅度波动的原因,以便为全区农业生产的长远建设和远景规划提供基础资料和科学依据,我们对全区十一个县进行了235年次的大田作物产量和主要气象因子的数字资料进行了分析,结果表明,干旱和低温是减产的主要气象因子,干旱发生次数多,减产幅度小(约10％左右),低温发生次数少(约五年发生一次),但减产幅度大。大田作物对低温的敏感程度以高粱最为明显,其次是谷子和玉米,再次为大豆。同时还看到,低温年有冬暖、春寒,五月份低温的特点,据此可以看出它在低温年预报中的实用价值。现将分析结果报告如下:
In order to deeply analyze the reasons for the sharp fluctuations of grain in Nenjiang area so as to provide basic information and scientific basis for the long-term construction and long-term planning of agricultural production in the whole region, we conducted 235 times of field crop production and major The meteorological data were analyzed. The results showed that drought and low temperature were the main meteorological factors to reduce production. Drought occurred more frequently and the rate of decrease was small (about 10%), and the number of low temperature occurred less frequently (about once in five years) Large reduction rate. The sensitivity of field crops to sorghum is most pronounced with sorghum, followed by millet and corn, again soybeans. At the same time, we can also see that it has the characteristics of winter warm, cold spring and low temperature in May. Therefore, it can be seen that it has practical value in the prediction of low temperature. The analysis results are reported as follows: