关键词: 小麦, 高产栽培, 新纪录

Abstract: Chengdu Plain is the most important agricultural region in the South west wheat zone of China.In the region winter is warmer and moister, and spring is more cloudy than that of other wheat zones in China.In the climate condition the yield level of the wheat was commonly lower than 5000 kg/ha.A record of the highest yield of wheat in Chengdu Plain was 7845 kg/ha, by using a wheat cultivar Miangyang 26 in 1995.A new wheat cultivar, Chuan nong 17(CN 17), which was developed in our experiment, displays a higher yield potential than other old cultivars in South west China.Compared with those old cultivars in South west China, this new cultivar CN 17 in cultivation of high yield possesses a tight plant type with significant more spike numbers per unit area, but with similar kernel weight per spike and smaller flag leaves.This cultivar was named as "consonance type".In this experiment the highest yield of wheat on record in Chengdu Plain was observed with 9712.5 kg/ha.by using the new cultivar CN 17 in this year.It was found that a lower sowing quantity(60 kg/ha.) was necessary in cultivation of high yield for more reasonable population structure, suitable leaf area index, and high quality of flag leaves.According to these results in this study a new process with precision sowing was designed for super high yield cultivation of wheat with "consonance type cultivars" in the area of South west China.

Key words: wheat breeding, cultivation, record on yield