| Effects of different irrigation methods on growth of maize and distribution of soil moisture |
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| DOI：10.7606/j.issn.1000-7601.2013.02.28 |
| Key Words: maize irrigation method physiological and ecological indicator soil moisture |
| Author Name | Affiliation | | SHI Liyan | College of Water Conservancy and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | NIU Wenquan | College of Water Conservancy and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Resources, Yangling, Shaanxi 712100, China | | ZHANG Jun | Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Resources, Yangling, Shaanxi 712100, China |
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| Abstract: |
| A pot experiment was conducted to investigate the growth and physiological parameters such as chlorophyll contents, photosynthetic rate and transpiration rate in maize, as well as the vertical distribution characteristics of soil moisture under different irrigation modes including direct irrigation, drip irrigation and micro embellish irrigation. The results showed that the physiological and ecological indicators of maize were greatly influenced by the irrigation methods. During seedling stage, the plants grew the fastest under drip irrigation; while during the early jointing stage, the plants grew the fastest under micro embellish irrigation, and the slowest under direct irrigation. The content of chlorophyll under drip irrigation was the highest, and it was the lowest under micro embellish irrigation during jointing stage when was the critical period of water requirement for maize. The photosynthetic rate of maize was affected more under micro embellish irrigation than drip irrigation and direct irrigation. The soil moisture was mainly distributed in 10-30cm soil layer under micro embellish irrigation, and in 10-40cm soil layer under drip irrigation when it became stable. According to the
measurement results after the irrigations during seedling and jointing stage, the soil moisture content at root system layer under micro embellish irrigation and drip irrigation was wholly larger than that under direct irrigation. |
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