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本文就黑河地区活动积温、六、八月平均气温与作物单产变化关系进行了分析讨论。发现大田作物单产高低,基本上依附于六月份气温的高低变化;粮薯豆单产低下之年与冷害的发生频率的关系,则是以十一年为周期呈一定规律的相间斜向平行,只有冷害与四年一遇的粮薯豆单产低下年重叠落在同一年份时,方成为重灾之年,使全区产量大幅度下降。
In this paper, the active accumulated temperature in the Heihe River, the average temperature in June and August and the relationship between crop yield changes were discussed. The results showed that the yield of field crops per hectare basically depends on the change of the temperature in June. The relationship between the low yield of sweet potato and the frequency of chilling injury is that the period of eleven years is parallel to each other with only regular Chilling injury and once in four years the yield of sweet potato under low over the years fell in the same year, the party became a catastrophic year, so that a substantial decline in output in the region.