| CO2倍增对羊草物候和生长的影响 |
| 摘要点击 774 全文点击 1290 投稿时间：1998-11-27 |
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| 中文关键词 实生苗 移栽苗 羊草 CO2倍增 物候期 |
| 英文关键词 seedling transplanted seedling Leymus chinensis doubled CO2 concentration phenology |
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| 中文摘要 |
| 为了研究CO2倍增对实生苗羊草和移栽羊草的影响,采用开顶式熏气装置进行了CO2倍增试验。结果表明:2种羊草的CO2倍增与对照相比,年生长期延长2～7d,其中枯黄期延迟1～7d,其它物候期提早1～7d.CO2倍增的羊草分蘖株数、成熟穗数、生物量分别为对照的119.2%～146.3%、133.3%～157%、113.2%～127.3%;羊草植株高生长明显增加。CO2倍增对实生苗羊草物候期的反应比移栽羊草更敏感,移栽羊草抽穗数的增加比实生苗羊草明显。CO2倍增对羊草物候期和生长的影响均属正效应。 |
| 英文摘要 |
| The effect of doubled CO2 concentration on the seedlings and transplanted seedlings of Leymus chinensis were examined by Opentop Chamber in this study. Compared with ck, the experiments showed that the growth period per year prolonged 2～7d, in which the wither period prolonged 1～7d, other phenological phases were 1～7d earlier than expected, the number of tillering and matured ears, biomass are respectively as 119.2%～146.3%,133.3%～157.1% and 113.2%～127.3% as ck, the increase of height was distinct, too. Seedlings were more sensitive in phenological response to doubled CO2 concentration than the transplanted seedlings. While the number of increased tillering are less distinct. The effect of doubled CO2 concentration on phenological phases and growth are both positive. |
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