中文摘要：

为探讨不同灌水和蛭石处理对盆栽一品红生长和灌溉水利用效率的影响,试验设计两个灌水处理（W1,总灌水量3.6L;W2,总灌水量7.2L）;3个蛭石铺设方式（Z0,无蛭石;Z1,蛭石铺在花盆底部;Z2,蛭石铺在花盆表面）。结果表明：在相同蛭石处理时,与W1处理对比,除一品红根、茎干重外,W2处理显著（P〈0.05）提高了一品红叶数,极显著（P〈0.01）提高了干物质质量和蒸腾量。在相同灌水处理时,与Z2（Z0）处理对比,Z1处理下一品红红叶、总叶数、蒸腾量、干物质质量和灌溉水利用效率分别提高了13.11%、5.00%、59.91%、5.50%和12.87%（4.76%、25.24%、103.95%、3.10%和26.01%）。因此,W2Z1处理为本试验最佳组合模式。

英文摘要：

To explore the effect of different irrigation and vermiculite treatments on the growth of potted Poinsettia and irrigation wa- ter use efficiency, two irrigation treatments （Wl, total irrigation amount 3.6L; W2, total irrigation volume 7.2L） ; three kinds of vermiculite paved way （Z0, no vermiculite; Z1, vermiculite slab in a pot at the bottom; Z2, vermiculite paved surface in pots）. The results showed that： in the same vermiculite processing, compared with Wl, in addition to Poinsettia root, stem dry weight outside, W2 treatment significantly （P~0. 05） increased the number of Poinsettia leaves, very significant （P~0. 01） increased the dry mass and transpiration. In the same irrigation treatment, Compared with Z2（Z0）, under Z1 deal Poinsettia red leaves, the total number of leaves, transpiration, dry mass and irrigation water use efficiency increased by 13. 11%, 5.00%, 59. 91%0, 5. 50%0 and 12. 87%0 （4. 76%,25. 24%, 103.95%, 3. 10% and 26. 01%）. Therefore, W2Zl is the best combination treatment of the test pattern.