| Effect of alternate partial root-zone irrigation on the growth, yield and water use efficiency of pear |
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| DOI：10.7606/j.issn.1000-7601.2007.04.25 |
| Key Words: pear internated irrigation yield water use efficiency(WUE) |
| Author Name | Affiliation | | CHENG Fu-hou | College of Agriculture, Hebei Engeering University, Handan, Hebei 056000, China | | ZHAO Zhi-jun | College of Agriculture, Hebei Engeering University, Handan, Hebei 056000, China | | ZHANG Ji-ying | College of Agriculture, Hebei Engeering University, Handan, Hebei 056000, China | | SONG Hui-yue | College of Agriculture, Hebei Engeering University, Handan, Hebei 056000, China | | TIAN Chun-yu | College of Agriculture, Hebei Engeering University, Handan, Hebei 056000, China |
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| Abstract: |
| Potted and field experiments were conducted to research into the effect of irrigation on the growth, yield, fruit quality and water use efficiency (WUE) of pear. The results showed that WUE of the alternate irrigation by 1/2 amount (1/2AI) was higher than conventional irrigation (CI), partially because the Photosynthesis rate(Pn) decreased less while transpiration rate(Tr) reduced more with the closing of stomata. The Pn of 1/3AI decreased significantly in potted experiment. The quantities of shoot and root growth of 1/2AI were similar to CI, which were obviously more vigorous than 1/3AI. After being rewatered, 1/2AI and 1/3AI produced more growth roots than CI in autumn. Results in field experiment showed that although the yield and quality under 1/2AI were not significantly affected compared with CI, the irrigation and precipitation water use efficiency was improved by 22.9%. |
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