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利用杂交方法打破作物品种的保守性,在一定的环境条件下培育,使其产生合乎实际需要的定向变异,再加以严格的选择,最后创造新的优良品种,这是现阶段品种改良上已经肯定了的有效办法。但是由于受了旧遗传育种学上唯心的、机械的观念的影响,以及对于进步的苏联农业生物科学缺少认识的关系,我们在处理杂交后代的具体方法上仍然是不够切合实际,有待修改的地方恐怕还是很多。
The use of hybrid methods to break the conservation of crop varieties, cultivated under certain environmental conditions, to produce the desired variation of the actual needs, coupled with strict selection, and finally create new varieties, which is the current stage of species improvement has been affirmed The effective way However, due to the influence of the idealistic and mechanical ideas of the old genetics and breeding, and the lack of understanding of the advanced agricultural biological sciences in the Soviet Union, we are still not realistic enough to deal with the specific methods for crossing offspring. I am afraid that is still a lot.