在杂交育种中,每年增加种植世代对加快育种进程、提高育种效率有很大的实践意义。目前,长江中、下游各大麦育种单位每年需到云南或黑龙江等地进行异地夏凡,这样化费人力、物力较多。为了探讨就地夏凡加代的可能性,我们对此作了初步试验。 In hybrid breeding, increasing annual planting generations has great practical significance in accelerating breeding process and improving breeding efficiency. At present, each barley breeding unit in the middle and lower reaches of the Yangtze River needs to go to different places in Yunnan, Heilongjiang, and other places for a year, so that it costs more manpower and material resources. In order to explore the possibility of local Xiafan Jia generation, we made a preliminary test of this.