早熟苦荬菜与晚熟苦荬菜性状比较

对河南郑州引进的晚熟品种大叶苦荬菜（Luctuca indica）和当地的早熟品种龙牧苦荬菜（L.indica cv.Longmu），进行了发芽情况、物候期、茎叶、生长速度、抗病性、产量以及营养成分测定比较试验。结果表明，两品种的种子发芽速度、茎叶性状、单株鲜质量与鲜草产量存在显著或极显著差异。大叶苦荬菜生育期较长，在齐齐哈尔地区未能成熟，3年平均单株鲜质量526.39 g，鲜草产量达36 196.99 kg/hm2；龙牧苦荬菜3年平均单株鲜质量413.38 g，鲜草产量44 978.58 kg/hm2。

Character differences of Luctuca indica between early maturity variety and late maturity variety

An experiment was conducted to compare the character differences of Luctuca indica between early maturity variety (Longmu) and late maturity variety (Daye) by measuring the seed germination, phenophase, ratio of stem to leaf, growth rate, disease resistance, yield and nutrient content. The results of this study showed that the germinating velocity, stem leaf characters, fresh weight of single plant and fresh yield was significantly different between early maturity variety and late maturity variety (P<0.05). The Daye variety of L.indica did not enter into maturity in the Qiqihar regions due to long reproduction period, and its fresh weight of single plant and fresh yield was 526.39 g and 36196.99 kg/ha, respectively; however, the fresh weight of single plant and fresh yield of Longmu variety was 413.38g and 44 978.58 kg/ha, respectively.