| Cite this article: | 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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| 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 |
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