| 引用本文: | 王文娟,丁 林,张育斌.双垄沟播喷灌旱作油葵土壤水分和产量效应研究[J].灌溉排水学报,2026,45(3):21-26. |
| WANG Wenjuan,DING Lin,ZHANG Yubin.双垄沟播喷灌旱作油葵土壤水分和产量效应研究[J].灌溉排水学报,2026,45(3):21-26. |
|
| 摘要: |
| 【目的】探究河西内陆干旱区双垄沟播模式下，喷灌定额对旱作油葵农田土壤水分状况及产量形成的影响。【方法】于2019—2021年在甘肃省水利科学研究院民勤灌溉试验站开展田间试验，以油葵品种“矮大头”为研究对象。设置4个喷灌定额处理，分别为24 mm（S1）、30 mm（S2）、36 mm（S3）和42 mm（S4）。对比分析不同处理下的旱作油葵农田土壤水分的时空变化特征、水分利用效率及产量的差异。【结果】喷灌灌水定额是调控0~60 cm土层土壤含水率的重要因素；在油葵生育期内，土壤贮水量与喷灌定额呈“升-降-升”的变化趋势，其中0~20 cm土层的土壤贮水量消耗速率较快，20 cm深度以下逐渐减弱；油葵产量并不是随着喷灌定额持续增加而增加，喷灌定额增加到一定程度，产量略有下降。【结论】综合考虑节水与增产目标，在民勤干旱地区推荐采用36 mm喷灌定额作为双垄沟播旱作油葵的适宜灌水模式。 |
| 关键词: 土壤水分；旱作油葵；双垄沟播；喷灌；水分利用效率；产量 |
| DOI：10.13522/j.cnki.ggps.2025110 |
| 分类号: |
| 基金项目: |
|
| Effect of sprinkler irrigation amount on soil water and yield of sunflower in double ridge-furrow planting system |
|
WANG Wenjuan, DING Lin, ZHANG Yubin
|
|
Gansu Provincial Institute of Water Conservancy Sciences, Lanzhou 730000, China
|
| Abstract: |
| 【Objective】Efficient water use is critical for sustaining crop production in arid regions where water resources are scarce. This study experimentally investigates the effects of different sprinkler irrigation amounts on soil water dynamics and the yield formation of sunflower (Helianthus annuus L.) in double-ridge planting systems in the Hexi inland arid region. 【Method】The experiment was conducted from 2019 to 2021 on a sunflower field at the Minqin Irrigation Experimental Station of the Gansu Provincial Institute of Water Conservancy Sciences. The sunflower cultivar ‘Dwarf Head’ was used as the experimental plant. There were four irrigation treatments, with sprinkler irrigation amounts of 24 mm (S1), 30 mm (S2), 36 mm (S3) and 42 mm (S4), respectively. During the experiment, we measured spatiotemporal variations in soil water content, water use efficiency and yield of sunflower.【Result】Variation in sprinkler irrigation amount had a significant influence on water content in the 0-60 cm soil layer. As the plant grew throughout its growth period, both water storage in the 0-60 cm soil layer and sprinkler irrigation quota showed an ‘increase-decrease-increase’ pattern. Soil water consumption by the plant was greatest in the 0-20 cm soil layer and decreased gradually with soil depth. With increasing irrigation amount, sunflower seed yield increased first and then declined after reaching a peak value when the irrigation amount was 36 mm.【Conclusion】For sunflower cultivated in the double ridge-furrow system in the arid areas of Minqin, a sprinkler irrigation amount of 36 mm was most appropriate for balancing water use efficiency and yield improvement. |
| Key words: soil moisture; dry oil sunflower; double ridge sowing; sprinkling irrigation; water use efficiency; yield |
