实践证明,在自然仓贮条件下,玉米杂交种的生活力随贮存时间的延长而下降,并且贮存时间越长,生活力下降越严重。据试验,利用同一组合育成的玉米杂交种,贮存1年后比新种子发芽势降低12%左右,出苗率降低14%左右,减产率为1.1%;贮存2年后减产率为5.2%。因此,在玉米生产上,最好不要使用陈 Practice has proved that in the natural storage conditions, the viability of maize hybrids decreased with the storage time, and the longer the storage life, the more serious the decline in viability. According to the experiment, the corn hybrids bred by the same combination had a 12% lower germination potential than the new seed after 1 year of storage, the rate of emergence was reduced by about 14%, and the yield reduction rate was 1.1%. After 2 years of storage, the yield reduction rate was 5.2%. Therefore, in the production of corn, it is best not to use Chen