| 引用本文: | 孙 蕊,高 天,张 硕,等.基于Meta分析的灌水梯度对新疆膜下滴灌棉田蒸散发影响研究[J].灌溉排水学报,2026,45(9):115-124. |
| Sun Rui,Gao Tian,Zhang Shuo,et al.基于Meta分析的灌水梯度对新疆膜下滴灌棉田蒸散发影响研究[J].灌溉排水学报,2026,45(9):115-124. |
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| 摘要: |
| 【目的】外部条件和土壤性质会影响膜下滴灌棉田蒸散发过程，不同气候条件、土壤性质和农田管理措施下灌水梯度对棉田蒸散发效应的影响尚未量化。【方法】采用Meta分析方法，以充分灌溉为对照组，分别以过度灌溉、轻度胁迫、中度胁迫、重度胁迫为试验组，定量分析了不同调控因子下灌水梯度对棉田蒸散发的影响。【结果】与充分灌溉相比，轻度、中度和重度水分胁迫分别使棉田蒸散发显著降低9.89%、19.41%和30.89%，过度灌溉则显著增加9.01%（P＜0.05）。气候条件对灌水梯度效应具有显著调控作用，在生长季降水量＞150 mm、平均温度为21~24 ℃、日照时间为1 500~2 000 h及平均风速为＞2 m/s时，蒸散发对灌水梯度的响应最为显著。土壤质地与农田管理措施进一步调节胁迫效应，砂壤土条件下蒸散发对水分胁迫响应最为敏感，而适宜施氮量（300~400 kg/hm2）、中等密度（6×104~12×104株/hm2）和高覆膜率（≥90%）组合可使重度胁迫下蒸散发降幅超过30%。【结论】灌水梯度通过多因子共同作用显著调节新疆膜下滴灌棉田蒸散发强度，首次系统量化了气候、土壤与农田管理多因素调控下灌水梯度对棉田蒸散发的综合效应，揭示了不同环境下蒸散发响应的异质性规律，为干旱区棉田制定差异化精准灌溉制度、提升农业水资源利用效率提供了科学依据。 |
| 关键词: 灌水梯度；蒸散发；膜下滴灌；Meta分析；棉田 |
| DOI：10.13522/j.cnki.ggps.2026006 |
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| A meta-analysis of the factors regulating evapotranspiration in cotton fields under different drip irrigation regimes in Xinjiang |
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Sun Rui, Gao Tian, Zhang Shuo, Liu Zongxi, Li Fadong, Gong Ping, Yang Guang
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1. College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi 832003, China; 2. Key Laboratory of
Cold and Arid Regions Eco-hydraulic Engineering of Xinjiang Production & Construction Corps, Shihezi 832003, China;
3. Key Laboratory of Modern Water-saving Irrigation of Xinjiang Production & Construction Corps, Shihezi 832003, China;
4. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
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| Abstract: |
| 【Objective】Evapotranspiration (ET) is a key determinant of irrigation requirement in agricultural production in arid regions. Under mulched drip irrigation, ET is influenced by climate, soil properties and agronomic management, but how irrigation regime affects ET across different environmental and management conditions remains poorly understood. This study addressed this knowledge gap by systematically analyzing the response of cotton-field ET to irrigation regime and identifying factors that regulate these responses.【Method】A meta-analysis was conducted using sufficient drip irrigation as the control to quantify the changes in cotton-field ET under over-irrigation, mild, moderate, and severe water-stress drip irrigation, and evaluate how climatic conditions, soil properties and agronomic management practices modified these responses.【Result】Compared with sufficient irrigation, mild, moderate, and severe water-stress irrigation significantly reduced cotton-field ET by 9.89%, 19.41%, and 30.89%, respectively, whereas over-irrigation significantly increased ET by 9.01% (P＜0.05). Climatic conditions strongly modulated ET responses to irrigation regimes, with the greatest responses occurring when growing-season precipitation exceeded 150 mm, mean temperature ranged from 21 to 24 ℃, sunshine duration ranged from 1 500 to 2 000 h, and mean wind speed exceeded 2 m/s. Soil texture and agronomic management also modified these responses, with ET in sandy loam soils showing the greatest sensitivity to irrigation regimes. A combination of nitrogen application rate of 300-400 kg/hm2, planting density of 6×104-12×104 plants/hm2, and mulch coverage ≥90% reduced ET by more than 30% under severe water-stress irrigation.【Conclusion】Irrigation regimes substantially regulated ET in mulched drip-irrigated cotton fields in Xinjiang through interactions among climate, soil properties and agronomic management. These findings provide a scientific basis for developing precision irrigation strategies for cotton production in arid regions and improving irrigation water-use efficiency. |
| Key words: irrigation gradient; evapotranspiration; mulch drip irrigation; meta-analysis; cotton field |
