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Journal of Agriculture ›› 2026, Vol. 16 ›› Issue (2): 54-58.doi: 10.11923/j.issn.2095-4050.cjas2024-0193

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Research Progress on Regulated Deficit Irrigation of Potatoes Under Mulched Drip Irrigation

LI Zhe1,2(), LI Guang1, ZHOU Chenli2, ZHANG Hengjia1,2()   

  1. 1 College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou 730070
    2 College of Agriculture and Biology, Liaocheng University, Liaocheng, Shandong 252059
  • Received:2024-10-31 Revised:2025-02-05 Online:2026-02-20 Published:2026-02-12

Abstract:

The imbalance between supply and demand of water resources and the low utilization efficiency are major challenges in China’s agricultural production. Adjusting deficit irrigation and mulched drip irrigation technology as water-saving irrigation methods have effectively improved water use efficiency in agriculture. This article reviews the research progress of regulated deficit irrigation in drip-irrigated potatoes under mulch, and discusses the impact of regulated deficit irrigation strategies on the physiological growth characteristics, yield, and quality of drip-irrigated potatoes under mulch. The results show that moderate deficit irrigation is beneficial for improving the water use efficiency of potatoes, promoting the growth of potato plants, and increasing crop yield and quality. Finally, the paper analyzes the current problems in the research of regulated deficit irrigation in drip-irrigated potatoes under mulch and puts forward countermeasures and suggestions.

Key words: regulated deficit irrigation, drip irrigation under mulch, potato, physiological growth process, yield, arid areas in Northwest China