Abstract:

In order to solve the problems of multiple, random and miscellaneous varieties planted in Beijing wheat production, 10 new wheat varieties with water saving, high quality and high yield were screened at three locations in Miyun, Shunyi and Fangshan District. The results showed that the yield of Nongda 3486 and Zhongmai 1062 were significantly higher than that of other varieties at three points, with the yield ranging from 7 500.0 to 9 667.5 and 7 666.5 to 9 834.2 kg·hm^-2, respectively. The plant height of the two cultivars were moderate, ranging from 70.3 to 75.5 cm and 72.4 to 77.4 cm, respectively, and their cold resistance were good, with the death rate of overwintering seedlings being 0.5%-2.0%, 1.8%-2.2%, and the death rate of stem being 4.0%-4.7%, 4.0%-10.0%, respectively. The dry weight of single plant was higher before overwintering and during turning green period of the two varieties, and they could be planted in large area in Beijing suburbs in the future. The yield performance of Huamai 18 in Miyun District and Zhongmai 886 in Fangshan District were not significantly different from that of Nongda 3486 and Zhongmai 1062. The rate of dead seedling and stem were 3.0% and 1.2%, 4.0% and 8.5%, respectively. The high and stable yield could be confirmed by demonstration planting in future.

Key words: winter wheat, variety, population, cold resistance, yield