| 引用本文: | 薛静,李旭强,陈军锋,等.不同降水年型下春玉米适宜秋浇模式的模拟研究[J].灌溉排水学报,0,():-. |
| xuejing,lixuqiang,chenjunfeng,et al.不同降水年型下春玉米适宜秋浇模式的模拟研究[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】探讨不同降水年型下灌区春玉米相对适宜的秋浇模式。【方法】以河套灌区沙壕渠试验站为例，基于所收集的田间实测数据对SWAP-WOFOST模型进行了参数率定和验证，并利用率定验证后的模型分析了1987—2017年间不同降水年型下春玉米相对适宜的秋浇模式。【结果】所构建的模型能够较好的模拟试验站的土壤水分、盐分和温度的动态变化以及作物生长状况。以提高春玉米的水分生产力为目标，不同降水年型下相对适宜的秋浇定额均为200 mm。【结论】丰水年和平水年适宜的秋浇时间建议在9月30日前后；枯水年适宜的秋浇时间则建议选在10月30日前后。 |
| 关键词: 秋浇；模型；春玉米；降水年型；水分生产力 |
| DOI： |
| 分类号:S271 |
| 基金项目:国家自然科学青年基金；中国博士后科学基金 |
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| Simulation of Suitable Autumn Irrigation Modes for Spring Maize under Different Precipitation Years |
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xuejing, lixuqiang, chenjunfeng, zhengxiuqing, chenxiaoyu
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Taiyuan University of Technology
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| Abstract: |
| 【Background】Hetao Irrigation District(HID) of Inner Mongolia is the largest designed irrigation area in China. It is an important grain and oil base in the west and an important ecological barrier in the north. It is a typical arid irrigated area, and its agricultural production is almost completely dependent on the irrigation of Yellow River. Therefore, it is particularly important to rationally utilize the water resources of the Yellow River in the new era to realize the high-quality development of HID. In order to ensure the normal growth of crops in this area and the continuous improvement of yield and quality, the irrigation area has gradually explored a kind of irrigation system with salt dripping after autumn and moisture preserving in spring autumn irrigation in the production practice over the years. Therefore, in order to maintain the sustainable development of agriculture, in the case of limited water resources, to improve crop water productivity (WP) for the purpose of formulating a reasonable autumn irrigation system, to lay a solid foundation for the sustainable development of ecological agriculture in irrigated areas.【Objective】Autumn irrigation is a kind of salt and soil conservation irrigation in HID to meet the suitable water and salt conditions of spring sowing crops in the following year. It is of great significance to discuss the suitable autumn irrigation mode of spring maize in HID under different precipitation years for saving irrigation amount of yellow diversion and ensuring grain production. 【Method】In this study, the Shahaoqu experiment station in HID was taken as an example. Based on the collected field measured data, parameter rate determination and verification of SWAP-WOFOST model were carried out,and the model after utilization ratio determination analyze the relatively appropriate autumn irrigation mode of spring maize with different precipitation years during 1987-2017. 【Result】The results showed that the SWAP-WOFOST model can well simulate the dynamics of soil moisture, salt and temperature as well as crop growth in the experiment station. In order to improve the water productivity of spring maize, the relative suitable autumn irrigation quota under different precipitation years is 200 mm, the autumn irrigation time in wet years and normal years is recommended to be September 30 and October 30 in dry years. 【Conclusion】The results obtained by numerical simulation can provide a reference for the establishment of a relatively suitable autumn irrigation modes for spring maize in different precipitation years. |
| Key words: autumn irrigation modes; SWAP-WOFOST model; precipitation year pattern; water productivity |
