| Effect of Water micro-collecting planting on corn （ Zea mays L．） photosynthesis rate and water use efficiency under simulated rainfall conditions |
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| DOI：10.7606/j.issn.1000-7601.2008.01.15 |
| Key Words: water micro-collecting planting photosynthesis rate water use efficiency summer corn (Zea mays L.) |
| Author Name | Affiliation | | HAN Juan | College of Agronamy?Northwest A ＆ F University?Yangling,?Shaanxi 712100,?China | | JIA Zhikuan | College of Agronamy?Northwest A ＆ F University?Yangling,?Shaanxi 712100,?China | | REN Xiaolong | College of Agronamy?Northwest A ＆ F University?Yangling,?Shaanxi 712100,?China | | HAN Qingfang | College of Agronamy?Northwest A ＆ F University?Yangling,?Shaanxi 712100,?China | | DING Ruixia | College of Agronamy?Northwest A ＆ F University?Yangling,?Shaanxi 712100,?China |
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| Abstract: |
| 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. |
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