论文部分内容阅读
在分析北京地区近５０年气候变化特征的基础上，重点探讨北京地区作物生长期间热量的农业气候年型，以及针对不同年型应采取的农业生产对策。
Based on the analysis of the characteristics of climate change in the past 50 years in Beijing, this paper focuses on the agricultural annual climate of heat during crop growth in Beijing and the agricultural measures to be taken for different years.