| 程福厚,赵志军,张纪英,宋慧月,田春雨.分区交替灌溉对梨生长结果及水分利用效率的影响[J].干旱地区农业研究,2007,(4):130~133 |
| 分区交替灌溉对梨生长结果及水分利用效率的影响 |
| 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 |
| 中文关键词: 梨 交替灌溉 产量 水分利用效率 |
| 英文关键词:pear internated irrigation yield water use efficiency(WUE) |
| 基金项目:河北省科技攻关计划指导项目(04230214) |
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| 中文摘要: |
| 为探讨半干旱地区农业节水的途径，以黄冠梨为试材，研究了分区交替灌溉对梨营养生长、结果和水分利用的影响。结果表明：采用1/2量分区交替灌溉较全量常规灌溉，光合速率稍有降低，但气孔导度和蒸腾速率显著降低，因此水分利用效率显著提高。在盆栽试验中灌水量为1/3量分区交替灌溉光合速率则受到显著影响，1/2量分区交替灌溉处理的枝梢和根系生长量显著大于1/3量分区交替灌溉，秋季复水后，以1/2量和1/3量分区交替灌溉处理新发生的侧根和须根较多。在田间试验不同灌溉处理中，1/2量分区交替灌溉对产量品质无显著影响，灌溉水和降雨总水分利用效率最高，较全量常规灌溉提高了22.9%。 |
| 英文摘要: |
| 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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