干旱绿洲区膜下滴灌条件下氧化策略对棉花产量和品质的影响及作用途径

IF 6.4 1区农林科学 Q1 AGRONOMY

Field Crops Research Pub Date : 2025-10-11 DOI:10.1016/j.fcr.2025.110196

Wenhao Li , Jinyin He , Tianyu Wang , Feifei Jia , Tehseen Javed , Bo Zhou , Zhenhua Wang

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引用次数: 0

摘要

膜下滴灌是干旱绿洲地区广泛应用的一种有效节水技术，可显著提高作物产量和品质。然而，长期施用会导致作物根系土壤压实和缺氧，对植物生长和产量产生不利影响。目的研究棉花发育过程中氧合方式的差异，揭示棉花发育过程中的氧合途径。为了解决这些问题，本研究研究了机械、文丘里和化学三种氧化方法以及四种化学氧浓度（9.2、13.3、17.3和25.5 mg L−1）对水稻生长、光合作用、荧光、产量和品质的影响，并通过影响产量和品质变化的潜在生理机制阐明了其作用途径。结果与未充氧对照相比，充氧处理改善了棉花的生长、光合性能和荧光性能。最高氧浓度（CO25.5）处理在单铃重（SBW, 11.29 %-13.32 %）、籽棉产量（SCY, 4 %-6.7 %）、纤维长度（FL, 4.3 %-5.8 %）和均匀度指数（UI, 4.9 %-5 %）方面取得了最显著的改善。它也获得了最高的综合评价分数（2.46），使其成为总体上最有效的选择。增加氧浓度可以对棉花的光合性能和荧光产生直接的积极影响，从而有利于棉花的生长、产量和品质。在单位氧浓度条件下，与对照相比，最低浓度（CO9.2）对单位氧增加的SBW、SCY、FL和UI的提高效果更好。研究发现，三种氧化方法之间的差异极小（<6.4 %），表明浓度比方法本身起着更关键的作用。结论本研究为西北干旱绿洲地区棉花增氧提供了适宜的方法，对促进当地农业高效节水和绿色可持续发展，提高棉花产量和品质具有重要意义。意义：促进干旱绿洲地区的可持续农业实践。

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Effects and action pathways of oxygenation strategies for enhancing cotton yield and quality under mulched drip irrigation in arid oasis regions

Context

Mulched drip irrigation is an effective water-saving technique widely used in arid oasis regions, significantly enhancing crop yield and quality. However, its long-term application can lead to soil compaction and hypoxia in crop roots, which can adversely affect plant growth and yield.

Objective

This study aimed to clarify the differences in oxygenation methods throughout the growth period of cotton and reveal the pathway of oxygenation during cotton development.

Methods

To address these issues, the current study investigated the effects of three oxygenation methods mechanical, Venturi, and chemical and four chemical oxygen concentrations (9.2, 13.3, 17.3, and 25.5 mg L⁻¹) on the growth, photosynthesis, fluorescence, yield, quality and elucidate its action pathways through underlying physiological mechanisms that influence variations in yield and quality.

Results

The results showed oxygenation treatments improved cotton growth, photosynthetic performance, and fluorescence performance compared to non-aerated controls. The treatment with the highest oxygen concentration (CO_25.5) achieved the most substantial improvements in single boll weight (SBW, 11.29 %-13.32 %), seed cotton yield (SCY, 4 %-6.7 %), fibre length (FL, 4.3 %-5.8 %), and uniformity index (UI, 4.9 %-5 %). It also attained the highest comprehensive evaluation score (2.46), making it the most effective option overall. Increasing oxygen concentration can have a direct positive impact on photosynthetic performance and fluorescence, thereby contributing to the growth, yield, and quality of cotton. The lowest concentration (CO_9.2) demonstrated better efficiency in enhancing SBW, SCY, FL and UI per unit increase in oxygen compared to the control under the condition of a unit oxygen concentration. The study observed minimal differences (<6.4 %) among the three oxygenation methods, indicating that concentration plays a more critical role than the method itself.

Conclusions

These findings provide a suitable method for oxygen addition to cotton in the arid oasis region of Northwest China, which is of great significance for the efficient water-saving and green sustainable development of local agriculture, as well as for improving the yield and quality of cotton.

Implications

To contribute to sustainable agricultural practices in arid oasis regions.

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来源期刊

Field Crops Research 农林科学-农艺学

CiteScore

9.60

自引率

12.10%

发文量

307

审稿时长

46 days

期刊介绍： Field Crops Research is an international journal publishing scientific articles on: √ experimental and modelling research at field, farm and landscape levels on temperate and tropical crops and cropping systems, with a focus on crop ecology and physiology, agronomy, and plant genetics and breeding.