【摘要】 为了探究黄瓜苗期生长发育规律和育苗方式,以华南型黄瓜‘沪杂7号’和荷短型黄瓜‘春秋王2号’为试材,用卡尺对植株高度、茎粗度、子叶大小、叶片大小进行测量,用天平称量地上部、根鲜质量,电子秤称量产量,利用LI-6400型光合仪对气体交换参数净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)与蒸腾速率(Tr)进行测量。结果表明,黄瓜植株高度、茎粗度增长均似线形,育苗后期生长速度更快,叶片长度、宽度增长速度前期较快,后期略慢;定植前大苗光合作用明显好于小苗,地上部、根鲜质量均显著高于小苗;华南型、荷短型黄瓜大苗定植,较小苗定植采收期均提前10 d以上,同时总产量明显增加。大苗定植对黄瓜提前上市及增加收入有明显效果。更多还原

【Abstract】 The objective of the study was to research cucumber seedling growth and seedling production method using 2 cucumber varieties. The plant height,stem diameter,cotyledon size,leaf size,shoot fresh weight,root fresh weight,yield and air exchange parameters(Pn,Gs,Ci,Tr) were measured. The results showed that cucumber plant height and stem diameter increased slower early and quicker later. The increase speed of leaf length and width increased quicker at early stage but slower at later stage. Photosynthesis of big seedling was better than that of small seedling before transplant. Shoot and root fresh weight of big seedling were significantly higher than that of small seedling. Big seedlings of both varieties were 10 days than the small ones and the yield was better.更多还原