马铃薯茎尖脱毒以后,试管培养结束,要移入大田生产,必须经过假植成活以后才能开始选苗定植。假植是试管苗由室內转室外,由培养基营养培植转入异养生活的过渡阶段,是一项艰难烦索而又技术性强的工作。我县今年共假植试管苗四千余株,实际成活二千余株,成活率 Potato tip after virus-free later, the test tube culture is over, to move into the field production, must be planted after planting seedlings planted. Planting is a test-tube plantlets from the room to the outside, from the culture of nutrition into the heterotrophic stage of transitional life, is a difficult and demanding but technical work. This year a total of more than 4,000 plant test-tube seedlings in our county, the actual survival of more than 2000 strains, survival rate