| 摘要: |
| 通过系统的田间试验，确定膜上灌条件下棉花调亏灌溉施加水分胁迫的适宜时期和土壤水分亏缺限值。各处理棉花的耗水量及产量实测结果表明，蕾期适度的水分亏缺处理较对照丰水处理全生育期节水11.83%，皮棉产量和水分利用效率提高22.83%和39.26%，调亏灌溉对棉花具有显著的节水增产和提高水分利用效率的效应。 |
| 关键词: 膜上灌 调亏灌溉 节水培产 棉花 |
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| 基金项目:高等学校博士点基金资助项目(980704) |
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| Effects of regulated deficit irrigation on plastic-mulched cotton |
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| Abstract: |
| In this study,with the aid of different irrigation treatments,a range of soil and plant water deficits were imposed on plastic-mulched cotton in order to study the response of yield to water stress.Based on the field experimental data of regulated deficit irrigation for cotton in 1998,effects of water stress on yield formation and water use efficiency of cotton were studied.The results show that water stress at various growing stages of cotton causes different influence on lint yield:a mild water deficits during budding stage can enhance lint yield and improve water use efficiency. |
| Key words: irrigation on the plastic-mulched land regulated deficit irrigation the effects of water-saving and yield-increasing cotton |
