不同育苗基质对浅液流水培莴苣生长的影响

摘要：为筛选出适宜莴苣浅液流水培的育苗基质，研究对比了6种商品化育苗基质（花泥30、泥炭块38、泥炭块30、椰糠块30、岩棉块36、岩棉块25）对奶油莴苣“富兰德里”生长的影响。结果显示：在同期播种、同期定植、同期采收条件下，使用泥炭块38、泥炭块30、椰糠块30等商品化基质育苗更有利于莴苣苗期和定植后的生长，其次为岩棉块36、岩棉块25处理，使用花泥30育苗效果最差；在同期播种、4叶1心期定植、同株质量标准采收情况下，使用泥炭块38、泥炭块30等商品化基质育苗的莴苣生长周期最短，其次为椰糠块30、岩棉块36、岩棉块25处理，使用花泥30育苗的莴苣生长周期最长。综合来看，对于浅液流水培莴苣，使用泥炭块38、泥炭块30、椰糠块30商品化基质育苗效果较好，莴苣苗期和定植后长势好，生长周期短，考虑到育苗成本，推荐使用泥炭块30或椰糠块30进行育苗。

Effects of Different Seedling Substrates on the Growth of Lettuce in Nutrient Film Technique

Abstract: In order to screen out the seedling substrates suitable for lettuce in nutrient film technique, the effects of six commercial seedling substrates (flower puree 30, peat block 38, peat block 30, coconut bran block 30, rock wool block 36, rock wool block 25) on the growth of buttered lettuce ''Flandria'' were studied and compared. The results showed that when sowing, planting, and harvesting at the same time, peat block 38, peat block 30 and coconut bran block 30 were more conducive to the growth of lettuce in the seedling stage and after planting, rock wool block 36 and rock wool block 25 had the second effect, and flower puree 30 had the worst seedling effect. When sowing at the same time, planting with the same number of leaves, and harvesting with the same weight, the growth time of lettuce grown with peat block 38 and peat block 30 was the shortest, followed by coconut bran block 30, rock wool block 36 and rock wool block 25. The growth time of lettuce using flower puree 30 seedlings was the longest. On the whole, for lettuce in nutrient film technique, peat block 38, peat block 30 and coconut bran block 30 were better than other substrates, the growth of luttce were good at seedling stage and after planting, and growth cycle were short. But considering the cost of raising seedlings, it was recommended to use peat block 30 or coconut bran block 30.