| 引用本文: | 杨龙,孙智敏,孟凡香.基于APSIM模型的寒区玉米生育期需水量模拟研究[J].灌溉排水学报,,():-. |
| Yang Long,Sun Zhi-min,杨.基于APSIM模型的寒区玉米生育期需水量模拟研究[J].灌溉排水学报,,():-. |
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| 摘要: |
| 作物需水量是确定灌溉制度和灌溉用水的重要依据。为探讨玉米生育期水资源的合理利用,以黑龙江省哈尔滨市双城区为例,运用APSIM模型模拟不同生育期年际降水量变化条件下玉米的产量,利用回归分析求得不同生育期玉米需水量的阈值。结果表明:玉米各生育期需水量出苗期、七叶期、拔节期、抽穗期、灌浆期、成熟期分别为29.5mm、66.07mm、131.52mm、85.14mm、136.72mm、44.16mm,分别占玉米降水总量的5.98%、13.40%、26.67%、17.27%、31.13%、8.96%。其中玉米各生育期平均降水亏缺率为45.47%、0、0.52%、17.49%、26.27 %、0。通过分析指出,玉米的需水关键是出苗期、抽穗期和灌浆期。 |
| 关键词: 需水量;灌溉;APSIM模型;玉米生育期;产量 |
| DOI： |
| 分类号:S274.1 |
| 基金项目:国家自然科学基金52109055 |
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| Simulation of water demand and influencing factors of maize in cold region based on APSIM model |
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Yang Long1, Sun Zhi-min1, 杨2
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1.College of Water Conservancy and Electric Power,Heilongjiang University;2.黑龙江大学
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| Abstract: |
| Crop water requirements are an important basis for determining irrigation systems and irrigation water. In order to explore the rational utilization of water resources during the growth period of maize, taking Shuangcheng District of Harbin City, Heilongjiang Province as an example, the APSIM model was used to simulate the yield of maize under the conditions of interannual precipitation changes in different growth periods, and the threshold of maize water demand in different growth periods was obtained by regression analysis. The results showed that the water requirements of maize in each growth stage were 29.5mm, 66.07mm, 131.52mm, 85.14mm, 136.72mm and 44.16mm, accounting for 5.98%, 13.40%, 26.67%, 17.27%, 31.13% and 8.96% of the total precipitation of maize, respectively. Among them, the average precipitation deficit rates of maize in each growth period were 45.47%, 0, 0.52%, 17.49%, 26.27% and 0. Through analysis, it is pointed out that the key to water demand of spring maize is the emergence stage, ear pumping stage and filling stage. |
| Key words: water demand; irrigation;APSIM model; maize growth period; yield |
