Impact of soil conditions on the physiological characteristics of maize plants in an arid region,Northwest China |
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| Authors: | LiWen Zhao ZhiBin He and WenZhi Zhao |
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| Affiliation: | 1. Linze Inland River Basin Research Station, Chinese Ecosystem Network Research, Lanzhou, Gansu 730000, China;2. Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Re-search Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;1. Linze Inland River Basin Research Station, Chinese Ecosystem Network Research, Lanzhou, Gansu 730000, China;2. Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Re-search Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;1. Linze Inland River Basin Research Station, Chinese Ecosystem Network Research, Lanzhou, Gansu 730000, China;2. Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Re-search Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China |
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| Abstract: | Overuse of irrigation water to ensure the crop yield of maize plants has caused serious water shortage problems in the middle reach of Heihe River, China. Thus, further research on the physiological characteristics, i.e., photosynthetic rate and leaf transpiration rate, are urgently needed to develop an efficient irrigation management system. In this paper, we selected two common soil textures (sandy loam, sand) and three one-time irrigation volumes (60 mm, 20 mm, 0 mm) in order to analyze the impact of soil conditions on the physiological characteristics of maize plants. Physiological and meteorological factors, soil water content and plant growing parameters were synchronously monitored on Jun. 30, Jul. 25 and Aug. 27 of 2012. The results indicate that sandy loam is better than sand for the growth of maize plants and single irrigation may provide limited influence on the physiological characteristics. Thus, increasing irrigation times and decreasing one-time volume is suggested for an efficient irrigation system. |
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| Keywords: | photosynthesis leaf transpiration water use efficiency maize plant soil water content |
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