| 摘要: |
| 【目的】为了优选出河西绿洲农区膜下滴灌向日葵适宜的水分调控策略,借助赋权的模糊物元模型,以大田向日葵为试验对象,对比评判向日葵产量、品质及水分生产率对不同水分调亏模式的响应结果。【方法】试验设置轻度(65%~75%FC,FC为田间持水量)、中度(55%~65%FC)和重度(45%~55%FC)3个亏水梯度,在向日葵苗期与成熟期实施不同程度调亏组合,剩余时期保持充分供水,共形成6个处理,而全生育期充分(85%~75%FC)供水作为对照处理,各处理3次重复,采用完全随机区组试验布置。【结果】结果表明：水分调亏对向日葵各指标的影响不同,建立了向日葵形态、产量、品质及水资源利用4类属性9个指标的多层次综合评价体系,采用博弈论组合赋权得出2019年株高权重最大,为0.141,粗蛋白含量最小,为0.083,2020年权重最大是粗脂肪,为0.162,最小是水分生产率,为0.065；基于模糊物元耦合模型进行综合评判,连续两个生长季综合得分排序一致,其中苗期轻度或中度且成熟期轻度处理的欧氏贴近度相对最大。【结论】在来水充裕时,苗期轻度且成熟期轻度调亏模式可获得较高的籽粒产量和品质；而不足时,苗期中度且成熟期轻度调亏模式是较佳的节水灌溉模式,而本研究也为绿洲向日葵抗旱节水灌溉提供了理论依据和科学支撑,同时该耦合模型对河西绿洲特色经济作物节水灌溉效益评价具有一定的应用价值。 |
| 关键词: 向日葵;水分调亏;博弈论;模糊物元;评价 |
| DOI： |
| 分类号:S274.1；S275 |
| 基金项目:甘肃省重点研发计划项目(18YFINA073)；国家自然科学基金项目（52269008）；甘肃省教育厅产业支撑计划项目（2022CYZC-51） |
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| Decision-making of Fuzzy Matter Element Model based on the Combined Weight of Game Theory for Sunflower in Deficit Irrigation Scheme |
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TENG Anguo1, WANG Zeyi2
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1.Hong’shui River Administration Office,Zhang’ye;2.Gansu Agricultural University
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| Abstract: |
| 【Objective】To optimize the optimal water regulation strategy for edible sunflower under mulched drip irrigation in Hexi Oasis agricultural area, the improved fuzzy matter-element model was used to compare and evaluate the effects of different water deficit modes on sunflower yield, quality and water productivity. 【Method】 Water deficit was applied in seedling and maturity stage, and sufficient water supply was maintained in other stages. A total of 6 treatments were set up at 3 levels of mild (75%-65% FC, FC was the field water capacity), moderate (65%-55% FC) and severe (55%-45% FC), and a control treatment with sufficient water supply (85%-75% FC) at each growth stage was set up, and each treatment was repeated for 3 times, using a completely random block experiment arrangement. 【Result】 The results showed that: the effect of water deficit on edible sunflower was different. A multi-level evaluation system was established for sunflower morphology, yield, quality and water resource utilization, and the weight of plant height was the highest (0.141) in 2019, crude protein content was the lowest (0.083), crude fat content was the highest (0.162) and water use efficiency was the lowest (0.065) in 2020. According to the comprehensive evaluation based on fuzzy matter-element model, the Euclidean degree was the best under mild or moderate treatment at seedling stage and mild treatment at maturity stage.【Conclusion】When water supply is abundant, the grain yield can be higher with mild regulated deficit irrigation (RDI) at seedling stage and mild RDI at maturity stage. However, when water source is insufficient, moderate RDI at seedling stage and mild RDI at maturity stage is a better water-saving irrigation mode. At the same time, the coupling model has certain application value for the evaluation of water-saving irrigation benefit of characteristic cash crops in Hexi Oasis, and the study also provides theoretical basis and scientific support for drought-resistant water-saving irrigation of edible sunflower in oasis. |
| Key words: sunflower; water regulation deficit; game theory; fuzzy matter element; evaluation |
