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物候是自然界的生物和非生物受气候周期性变化影响而出现的反应。它不仅反映当时的天气,而且反映过去一段时期内天气的积累。因此,物候现象是气候季节周期变化的指示器。某一物候期的迟早,直接反映当年季节的迟早。利用物候可以预测农时、预测病虫害、监测环境污染、划分物候季节、编制自然历以及预报气象变化趋势、预报植物生长发育期等。物候观测可以为农林业的教学、科研和生产提供并积累基础资料。作者从1985年起在保定市区及郊区进行动植物物候观测研究。本年报是1991年的观测结果及其分析。
Phenology is the response of natural and non-living organisms to the cyclical changes in climate. It not only reflects the prevailing weather, but also reflects the accumulation of weather over the past period. Therefore, phenology is an indicator of cyclical changes in the climate season. A phenology sooner or later, a direct reflection of the current season sooner or later. The use of phenology can predict the agricultural period, forecast pests and diseases, monitor environmental pollution, divide the phenology season, prepare natural calendar and forecast meteorological trends, forecast plant growth and development. Phenological observation can provide basic information for the teaching, research and production of agriculture and forestry. From 1985 onwards, the author studied the observation of plant and animal phenology in the urban and suburban areas of Baoding. This annual report is the result of 1991 observations and their analysis.