1.种子的选择 种子质量是取决于当年产量的关键因素,现农民中流传的种子大多已退化,那是代代相传没有经过选育的种子,或者是存放多年的陈旧种子。这些种子大小不一,无光泽,发芽率降低。即使发芽率还可以,但种下去没后劲,抗病能力降低等。因此要选择当年或头年新种子并且是育种单位提供经过选育的大粒种子。此外,还应根据不同地区选择对口品种为好。 1. Choice of seeds The quality of seeds depends on the key factors of the current year’s output. Most of the seeds circulating among peasants have largely deteriorated. They are seeds that are passed on from generation to generation without being bred, or old seeds that have been stored for many years. These seeds vary in size, matte, germination rate decreased. Even if the germination rate can be, but no stamina to survive, reduce disease resistance and so on. So choose the year or first year new seed and breeding unit to provide the breeding of large seeds. In addition, should also be based on different regions choose counterparts as well.