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营养液育苗移栽是一项新的玉米栽培技术．选用的玉米品种是由玉米营养液育苗移栽所能争得的积温和当地的热量条件决定的，经试验研究求得玉米营养液育苗移栽能争得≥１０℃的积温２００～３００℃，选择的品种所需的积温为当地８０％保证率≥１０℃的积温加上２００～３００℃．育苗期是培育适宜移栽的大苗壮苗的保证，育苗期由玉米幼苗生长发育速度及当地移栽期早晚决定的，从玉米籽摆盘到幼苗达４～５叶需２０～２５天，由当地气候适宜移栽期向前倒推２０～２５天即为育苗期，此时开始育苗幼苗长到４～５叶时当地即可达到气候适宜移栽期．气候适宜移栽期是移栽成活率高，不受霜冻危害的保证；气候适宜移栽期是由幼苗的抗寒能力及当地回暖早晚决定的．经试验和调查研究，玉米幼苗的冻死温度为－３℃。当空气最低温度（距地面１．５米处的气温）为０℃时，玉米幼苗的环境温度、即地面温度为－２．８～－２．９℃，所以，空气最低温在≤０℃绝对通过的日期即为气候适宜移栽期．
Nutrition liquid seedling transplanting is a new corn cultivation technology. Corn varieties used by the selection of corn seedlings transplanted fluid can win the accumulated temperature and local heat conditions, the experimental study obtained corn seedling transplanting can win ≥ 10 ℃ accumulated temperature 200 ~ 300 ℃, The accumulated temperature required for the selected varieties is the accumulated temperature of 80% of the guaranteed rate of ≥10 ℃ plus 200 ~ 300 ℃. Seedling raising is suitable for transplanting seedlings to ensure strong seedlings, nursery growth and development of corn seedlings by the local transplanting of early and late decisions from the corn seedlings to plateau up to 4 to 5 leaves 20 to 25 days, from Local climate is suitable for transplanting forward push back 20 to 25 days is the breeding period, this time starting seedling seedlings grow to 4 to 5 leaves when the local climate can reach transplanting. Climate suitable for transplanting is a high survival rate of transplanting, not subject to the danger of frost; climate suitable transplanting period is determined by the ability of cold-resistant seedlings and local warming. After test and investigation, the freezing temperature of corn seedlings is -3 ℃. When the lowest air temperature (air temperature 1.5m above the ground) is 0 ℃, the ambient temperature of corn seedling, that is, the ground temperature is -2.8 ~ -2.9 ℃, so the lowest air temperature is ≤0 ℃ The date of absolute passage is climate-suitable transplanting period.