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对不同基质上矮牵牛幼苗的生长发育进行了初步研究．结果表明，在草炭基质上幼苗生长较好，叶绿素含量、光合速率和根系活力分别比蛭石提高０３ ｍｇ·ｄｍ －２ ，０１６ ～０２８ μｍｏｌ·ｍ －２·ｓ －１ 和４９６ ～５７２ ｍｇ·ｇ －１·ｈ －１ ．说明草炭是矮牵牛较理想的育苗基质．
The growth and development of petunia seedlings on different substrates were studied. The results showed that the growth of seedlings on peat substrate was better, chlorophyll content, photosynthetic rate and root activity were increased by 0.3 mg · dm -2 and 016-0.28 μmol · m -2 · s -1 And 496 ~ 572 mg · g -1 · h -1. Peat charcoal is more ideal seedling substrate for petunia.