试验以5个主栽玉米品种进行分期早播，研究低温早播对玉米苗期生理指标和产量的影响，筛选耐(抗)低温的玉米品种。结果显示：播期、品种及二者互作对生理指标影响效果差异显著（p京单28>先玉335>德美亚2号>绥玉7。
英文摘要:
In this experiment, 5 main cultivars of maize were used for early sowing in different low temperature, to research the effect of different sowing date on physiological indexes of seedling and yield of maize. It is screened out that maize varieties with higher resistance to low temperature or tolerant low temperature. The results showed that sowing dates, varieties, and internationals were significant (p Jingdan28> Demeiya2> Xianyu335> Suiyu 7.
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