| 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,0,():-. |
| WU Yamei,zhu jin tin,ZHU Delan,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,0,():-. |
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| 摘要: |
| 【目的】目前灌溉冬小麦产量与水分利用效率影响因素的研究大多数集中于某一特定地区,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】本研究综合已发表的田间试验研究数据,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,增幅逐渐趋于稳定,水分利用效率效应随灌溉定额的增加呈先增加后减少的趋势,当灌溉定额增加到＞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。该研究结果可为针对不同降雨年型进行适时适量田间灌溉提供参考。 |
| 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： |
| 分类号:S11+4；S512 |
| 基金项目: |
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| Meta-analysis on Influencing Factorsimpact of Irrigateding on winter wheat Yield and Water Use Efficiency in China |
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WU Yamei1, zhu jin tin2,3, ZHU Delan1, LI Dan1
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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;2.Qinghai Research Institute of Water Conservancy &3.Hydro-Electric Power
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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 in a particular area, and the results of the study are scattered. Considering above problems, 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, and 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 growth period, Irrigation increased winter wheat yield by 39.34% and water use efficiency increased by 3.39%. The yield increased with the increasing of irrigation quota, and the increase tends to stabilize gradually, but the effect of water use efficiency increases firstly and then decreases with the increasing of irrigation quota. When the irrigation quota was increased to ＞240mm, the change rate of relative water use efficiency (WUE) of winter wheat was decreased to-11.29%. With the increasing of the average temperature during the growing period, the yield-increasing effect of irrigated winter wheat was significantly increased. 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 growing period had a significant effect on the yield of irrigated winter wheat, and the effect of irrigation yield was most prominent when the rainfall type in the growing period was dry year with yield increase rate 72.48%. 【Conclusion】 The irrigation quota of 60~120mm 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 |
