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宿县地区位于黄淮平原,是我省大豆的重要产区之一.大豆小麦轮作是本区传统的种植制度.解放后,本区大豆单产提高较快,但年际之间波动较大,主要由于未能掌握旱涝灾害发生的规律和采取相应的措施.因此,探讨本地区大豆生育期间的气候规律及其对大豆生产的影响,对于趋利避害,争取大豆高产稳产以及进一步利用淮北地区大豆生产期间的气候潜力都有着一定的意义. 一、资料及分析方法本文所用的大豆产量资料和有关的气象资料分别抄自宿县地区统计局和宿县地区气象局.对各县产量进行连续两次的五年滑动平均,将所得的平均值作为大豆的时间趋势产量y_t,它代表了本地生产水平的变化情况,而各年的大豆实产y与趋势产y_t的差值y_w可以看作是气候条件的变化而引起的产量波动,称为气候产量.考虑到生产水平的变化,我们用气候相对增产率y’_w来分析大豆生产与气候条件的关系,它是气候产量与趋势产量的比值:
Suxian region is located in the Huanghuai Plain, is one of the important producing areas of soybeans in our province.Soybean rotation is the traditional planting system in the region.After the liberation, soybean yield increased rapidly in this area, but fluctuated greatly from year to year, Mainly due to failure to grasp the law of droughts and floods and take appropriate measures.Therefore, to explore the climate during the growth of soybean in the region and its impact on soybean production, for profit and avoid disadvantages for high yield and stability of soybean and further use of Huaibei The potential of climate during the soybean production in the region has a certain significance.First, data and analysis methods used in this article soybean yield data and the relevant meteorological data were copied from Suxian County Bureau of Statistics and Suxian District Meteorological Bureau.County output Five consecutive five-year moving average, the average as the trend of soybean yield y_t, which represents the local production level changes, and the difference between y_t and y_t soybean yield y each year can see As a result of changes in climatic conditions caused by fluctuations in production, known as climate production. Taking into account the production level changes, we use the relative yield of climate y’_w to analyze soybean Relations of production and climatic conditions, it is the ratio of yield and yield trends of climate: