不同的混合基质对番茄和黄瓜幼苗生长的影响存有差异，其中以炉渣＋蛭石＋珍珠岩（３：６：１）综合效果较好，能明显促进地上部和根系生长，增加于物质积累。若把０．２％ＰＶＡ加入到土壤中，对番茄和黄瓜幼苗生长具有明显的促进作用，有利于培育壮苗；而把ＰＶＡ施入到混合基质中，对幼苗生长影响的效果不甚明显。 The effects of different mixed media on the growth of tomato and cucumber seedlings were different. Among them, the effect of slag + vermiculite + perlite (3: 6: 1) was better, which could obviously promote the growth of shoots and roots and increase the material accumulation . Adding 0.2% PVA into the soil could significantly promote the growth of tomato and cucumber seedlings, which is conducive to the cultivation of strong seedlings. However, the effect of applying PVA into the mixed medium on seedling growth is not obvious.