| 引用本文: | 武亚梅,朱金铤,朱德兰,等.基于Meta分析的中国灌溉冬小麦产量及水分利用效率影响因素研究[J].灌溉排水学报,2020,39(2):84-92. |
| ,et al.基于Meta分析的中国灌溉冬小麦产量及水分利用效率影响因素研究[J].灌溉排水学报,2020,39(2):84-92. |
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| 摘要: |
| 【目的】目前针对灌溉冬小麦产量与水分利用效率影响因素的研究大多集中于某一特定区域，研究结果零散，针对上述问题，揭示宏观尺度下灌溉冬小麦产量和水分利用效率的影响因素。【方法】综合已发表的田间试验数据，采用Meta分析方法得出灌溉在不同地区的增产效应和水分效应，在异质性检验的基础上，通过Meta亚组分析探究灌溉定额、降雨量和平均气温等对冬小麦产量和水分利用效率的影响机制。【结果】与生育期不灌溉相比，灌溉使冬小麦总体增产39.34%，水分利用效率提高3.39%；增产率随灌溉定额的增加而增大，增幅最终趋于稳定，水分利用效率随灌溉定额的增加呈先增加后减少的趋势，当灌溉定额＞240 mm时，冬小麦相对水分利用效率变化率显著降低11.29%；随着生育期平均温度上升，灌溉冬小麦增产效应显著提高，生育期均温＞9 ℃时，冬小麦增产率高达45.81%；生育期降雨量对灌溉冬小麦产量影响显著，生育期降雨量处于干旱年份时灌溉增产效应最明显，增产率为72.48%。【结论】灌溉定额为60～120 mm更有利于提高冬小麦产量和水分利用效率。 |
| 关键词: 冬小麦；产量；水分利用效率；Meta分析；灌溉定额；气象因子 |
| DOI：10.13522/j.cnki.ggps.2019049 |
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| Meta-analysis on influencing factors of irrigated winter wheat yield and water use efficiency in China |
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WU Yamei , ZHU Jintin, ZHU Delan, LI Dan
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1.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling 712100, China; 2.College of Water Resources and Architectural Engineering, Northwest A& F University,Yangling 712100, China; 3.Qinghai Research Institute of Water Conservancy & Hydro-electric Power, Xining 810001, China
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| Abstract: |
| 【Objective】At present, most of the studies on the factors affecting the yield and water use efficiency of irrigated winter wheat are concentrated on a particular area, and the study are scattered. Considering these, this paper reveals the influencing factors of yield and water use efficiency of irrigated winter wheat at macro scale.【Method】Based on the published data of field experiments, we obtained the effects of irrigation on yield and water use in different areas by using Meta-analysis method. On the basis of heterogeneity test, the effects of irrigation quota, rainfall and average temperature on winter wheat yield and water use efficiency were investigated by meta subgroup analysis.【Result】Compared with non-irrigated winter wheat during the growth period, irrigation increased winter wheat yield by 39.34% and water use efficiency by 3.39%. The yield increased with the irrigation quota, and the increase tended to stabilize gradually, while the effect of water use efficiency increased first and then decreased with the irrigation quota. When the irrigation quota was increased to＞240 mm, the change rate of relative water use efficiency (WUE) of winter wheat decreased by 11.29%. With the increase of average temperature during the growth period, the yield-increasing effect of irrigated winter wheat was significant. The yield of winter wheat increased by 45.81% when the average temperature of the growing period was higher than 9 ℃. The rainfall in the growth period had a significant effect on the yield of irrigated winter wheat, and the effect of irrigation yield was the most prominent when the rainfall type in the growth period was dry year with yield increase rate of 72.48%. 【Conclusion】The irrigation quota of 60～120 mm is more favorable to increase yield and water use efficiency of winter wheat. The study results can be used as reference for timely and appropriate field irrigation for different rainfall years. |
| Key words: winter wheat; yield; water use efficiency; Meta-analysis; irrigation quota; meteorological factor |
