玉米育苗移栽是在传统的直播栽培基础上发展起来的一项新技术，具有调节茬口、提早播种、节约种子、培育壮苗、组建科学合理的群体结构、增产增收等诸多优点。 １ 必要性 超甜玉米是普通玉米的一个突变体，在ｓｈ２胚乳突变基因的控制下，籽粒内含物发生了明显改变。主要特点是 Corn seedling transplanting is a new technology developed on the basis of traditional direct seeding cultivation. It has the advantages of adjusting stubble, planting early, saving seeds, cultivating strong seedlings, forming scientific and reasonable group structure, increasing production and increasing income. 1 Necessity Super-sweet corn is a mutant of common maize and under the control of the sh2 endosperm mutant gene, the grain contents have changed significantly. The main feature is