| 引用本文: | 丁蓓蓓,张雪靓,赵振庭,等.限水灌溉条件下华北平原冬小麦产量及水分利用效率变化的Meta分析[J].灌溉排水学报,0,():-. |
| DING Beibei,ZHANG Xueliang,ZHAO Zhenting,et al.限水灌溉条件下华北平原冬小麦产量及水分利用效率变化的Meta分析[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】定量综合分析华北平原限水灌溉条件下冬小麦产量及水分利用效率的变化。【方法】以现状灌溉情形作为对照，基于47篇公开发表的学术论文中所收集的551对冬小麦产量观测数据与459对冬小麦水分利用效率观测数据，采用Meta-analysis方法对限水灌溉条件下的田间试验结果进行综合归纳，并通过亚组分析探讨了不同灌溉方案、土壤质地和田间管理措施等对产量和水分利用效率的影响。【结果】与现状灌溉相比，限水灌溉条件下冬小麦平均减产10.5%，水分利用效率平均增加4.3%。其中，灌溉3次方案可使得冬小麦稳产增效；在关键需水期灌溉1~2次的方案下，冬小麦的减产率可基本控制在10%以内，水分利用效率提高5%以上，显示出适度减产但效率增加。推荐的冬小麦种植田间管理方案包括：选用“石家庄8号”、“石4185”等节水品种；在10月中旬播种（适当晚播或晚播）；种植密度控制为400~600株/m2；增加有机肥施用；使用地覆或秸秆覆盖；实施深松耕等农艺节水措施。另外，冬小麦限水灌溉方案更适宜在砂壤土区域进行推广。【结论】限水灌溉下冬小麦减产但增效，适当的田间管理方案可有效降低减产程度，提高水分利用效率。 |
| 关键词: 限水灌溉；冬小麦；产量；水分利用效率；Meta分析；华北平原 |
| DOI： |
| 分类号:S274.1；S275.5 |
| 基金项目:国家自然科学基金(41807183) |
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| Meta Analysis of the Variations in Winter Wheat Yield and WUE Under Limited Irrigation in the North China Plain |
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DING Beibei, ZHANG Xueliang, ZHAO Zhenting, HOU Yonghao
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College of Land Science and Technology,China Agricultural University
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| Abstract: |
| 【Objective】Limited irrigation is an effective measure to realize agricultural water saving. Quantitative comprehensive analysis of the variations in winter wheat yield and water use efficiency (WUE) under limited irrigation is important to conserve groundwater as well as ensure food production in the North China Plain.【Method】In this study, considering the current irrigation schedule as control group, the related field experiment data were retrieved and integrated. Based on the selected 47 papers, 511 pairs of winter wheat yield observation data and 459 pairs of WUE observation data were used to conduct Meta-analysis. Through subgroup analysis, the effects of different irrigation schemes, soil texture and field management measures on winter wheat yield and WUE were quantified further.【Result】Under the limited irrigation schemes, the variations in winter wheat yield and WUE were -10.5% and 4.3 % averagely in comparison with the current irrigation schedule. The irrigation scheme with three times during the winter wheat growing season could realize stable yield and an improvement of WUE. Under the schemes of applying irrigation twice or once during the winter wheat growing season, the reductions of winter wheat yield were less than 10%, and the increases in WUE were more than 5%. In order to minimize the reduction in wheat yield under the limited irrigation schemes, the crop variety of Shijiazhuang 8 and Shi 4185, sowing time during mid-October, planting density with 400-600 plants per square meter, increasing application of organic fertilizer, usage of mulch or straw mulching, and conducting subsoiling were recommended as the effective management measures. Besides, the limited irrigation scheme of winter wheat should be more suitable in the area with sandy loam soil.【Conclusion】The above results could provide useful reference for the application of limited irrigation schemes for winter wheat in the North China Plain towards the sustainability of both water and food . |
| Key words: Limited irrigation; Winter wheat; Yield; WUE; Meta-analysis; North China Plain |
