| 韩娟,贾志宽,任小龙,韩清芳,丁瑞霞.模拟降雨量下微集水种植对玉米光合速率及水分利用效率的影响[J].干旱地区农业研究,2008,(1):81~85 |
| 模拟降雨量下微集水种植对玉米光合速率及水分利用效率的影响 |
| Effect of Water micro-collecting planting on corn （ Zea mays L．） photosynthesis rate and water use efficiency under simulated rainfall conditions |
| |
| DOI：10.7606/j.issn.1000-7601.2008.01.15 |
| 中文关键词: 集雨种植 光合速率 水分利用效率 夏玉米 |
| 英文关键词:water micro-collecting planting photosynthesis rate water use efficiency summer corn (Zea mays L.) |
| 基金项目:“十一五”国家科技支撑计划课题(2006BAD29B03) |
|
| 摘要点击次数: 133 |
| 全文下载次数: 128 |
| 中文摘要: |
| 利用人工模拟降雨装置,设置平作和垄作两种种植方式,以平作为对照组,研究了玉米在垄沟集雨下光合特性和水分利用效率的变化。结果表明,在230 mm3、40 mm的降雨量下,沟垄集雨种植玉米的光合速率显著高于对照组,分别提高了41.1%和10.5%,在440 mm的降雨量下,两者的差异不显著;在3个雨量下,沟垄集雨种植玉米的叶片瞬时水分利用效率比对照组均有提高,分别提高了20.5%、18.9%和10.7%;沟垄集雨种植玉米和对照组的光合速率日变化均呈“单峰型”曲线,对照组水分利用效率在230 mm、340 mm降雨量下呈“单峰型”曲线,在440 mm降雨量下呈现逐渐下降的趋势,沟垄集雨种植的玉米水分利用效率均呈“单峰型”曲线。 |
| 英文摘要: |
| Photosynthesis characteristics and water use efficiency (WUE) were studied in different stimulated rainfall.The results showed that the photosynthesis rate (Pn) of micro-collecting planting treatments was higher in comparing with the control condition under 230 mm and 340 mm rainfall,increased by 41.1% and 10.5% separately.But there was no significant difference between micro-collecting planting and the control condition under 440 mm.And the WUE of micro-collecting planting treatments in comparing with the control condition was higher under 230 mm、340 mm and 440 mm rainfall,increased by 20.5%,18.9% and 10.7% separately.The results also showed that the diurnal change curve of Pn was a single peak charact in micro-collecting planting treatments and the control condition.The diurnal change of WUE was a single peak curve under 230 mm and 340 mm rainfall,but was a downward tendency under 440 mm in the control condition.In micro-collecting planting,the diurnal change of WUE was a single peak curve. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |