为了尽量缩短春小麦育种年限,加快育种步伐,1977年以来我们采用了一年两代(就地一代,南繁一代)和一年三代(就地一代,云南一代,海南岛一代)的方法,前一方法虽然起到一定作用,但是一年只能繁育两代,且往返遥远,费用、人力都不节约;后一方法时间太紧迫,在实际应用中曾发生困难。为了达到既节约人力,物力、财力,又能就地一年繁育三代 In order to shorten the breeding time of spring wheat and accelerate the pace of breeding, we have adopted the methods of one generation a year (local generation, the second generation) and three generations a year (local generation, Yunnan generation, Hainan island generation) since 1977. The former Although one method plays a certain role, it can only breed two generations a year, and there is no long-term cost and manpower saving. The latter method is too time-consuming and has encountered difficulties in practical application. In order to achieve not only save manpower, material and financial resources, but also three generations a year breeding in situ