SOWING WHEAT IN THE HOT SUMMER AT PLAIN REGION OF BEIJING AND ITS SIGNIFICANCE
北京地区夏播小麦的生态条件及生育表现

The ecological experiments of wheat in the hot summer was being carried out during 1982-1984 in Beijing. The date of sowing is in the first ten days of July every yaer. The strong springness wheat could get ears and ripeness with rapid growth and development. The plant is dwarfism with low 1000 seed Weight. Higher temperature and longer day-length could ensure and promote the growth and development of plant. The early stage of growth and development does not require low temperature and the vernalization does not occur in this ecotype of varieties. Sowing in the summer has great significance both in production and scientific research work.