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本文分析了北京地区小麦生长期内太阳总辐射特征,以及许家务、塔院大队小麦不同群体结构光能利用状况。小麦亩产800—1000斤经济产量光能利用率在0.4—0.5％间,生物学产量光能利用率在1.17—1.89％左右。生长盛期最高光能利用率可达5.09％,说明北京地区先进社队小麦生产已具有相当水平。但从光能利用观点看,继续增产还有很大潜力。在分析小麦光合生产率、光合势、光能利用率与产量关系的基础上,提出了北京地区小麦适宜群体结构及提高光能利用率的增产途径。
This paper analyzes the characteristics of solar radiation in the wheat growing season in Beijing and the light energy utilization of different groups of wheat in Xujiawu and Tailuan Brigade. 800-1000 kg of wheat per mu yield of economic output of light energy utilization rate of 0.4-0.5%, the biological yield of light energy utilization rate of 1.17-1.89%. The maximum solar energy utilization during the peak growth period was 5.09%, indicating that the advanced team of wheat production in Beijing has reached a fairly high level. However, from the light energy utilization point of view, there is still great potential for continued production increase. Based on the analysis of the relationship between photosynthetic productivity, photosynthetic potential, light energy utilization and yield of wheat, the suitable yield structure of wheat in Beijing and its yield increase were put forward.