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自从积温学说引进我国以来,积温这个物理量已广泛地应用在农业生产中,并成为作物生育及地区热量资源的重要指标。但是生产实践证明,作物完成某发育期或全生育期所要求的积温,无论是活动积温或有效积温,都存在着地区、季节和年度的差异,从而限制了积温的使用范围。因此研究或探讨这种差异的成因及其克服的办法,对合理利用气候资源,发展农业生产有重要作用。
Since the theory of temperature accumulation was introduced into our country, the physical quantity of accumulated temperature has been widely used in agricultural production and has become an important indicator of crop growth and regional heat resources. However, it has been proven in production practice that the accumulative temperature required for a crop to complete a developmental period or a whole growth period, regardless of active accumulated temperature or effective accumulated temperature, has differences in regions, seasons and years, thus limiting the use of accumulated temperature. Therefore, to study or explore the causes of this difference and the ways to overcome them will play an important role in the rational utilization of climate resources and the development of agricultural production.