Journal of Northern Agriculture ›› 2026, Vol. 54 ›› Issue (1): 112-120.doi: 10.12190/j.issn.2096-1197.2026.01.11

• Water-saving irrigation·Agrometeorology • Previous Articles     Next Articles

Study on efficient use of irrigation water for sunflower in the Yanshan hilly region

LI Xiaoru1, WANG Shengnan1, LI Wenwen1, GAO Zhihui1, YU Huanhuan1, WANG Xiaobo2, RONG Di1, Wurentuya1, QU Yingchao1, WANG Yan1   

  1. 1. Chifeng Academy of Agricultural and Animal Husbandry Sciences,Chifeng 024000,China;
    2. Harqin Banner Bureau of Agriculture and Animal Husbandry,Harqin Banner 024400,China
  • Received:2025-07-16 Online:2026-02-20 Published:2026-04-01

Abstract: 【Objective】 To improve irrigation water use efficiency for sunflower in the Yanshan hilly region,thereby achieving efficient use of water resources as well as high-quality and high-yield sunflower production. 【Methods】 Using edible sunflower variety T339 as the experimental object,experiments were conducted in Harqin Banner,Chifeng City,Inner Mongolia. Local flood irrigation served as the control(CK) and four irrigation factors-irrigation quota(S1D),irrigation intensity(S2Q),irrigation frequency(S3P),and lower irrigation limit(S4X)-were used as the experimental groups,resulting in 12 designed treatments(S1D1,S1D2,S1D3,S2Q1,S2Q2,S2Q3,S3P1,S3P2,S3P3,S4X1,S4X2,S4X3). The effects of different treatments on sunflower yield,water use efficiency,effective utilization coefficient of irrigation water,seed quality,growth indicators,and dry matter weight were analyzed. 【Results】 The S1D2 treatment(irrigation quota of 900 m3/hm2) achieved the highest sunflower yield(4 303.95 kg/hm2) and the highest water use efficiency [1.21 kg/(mm·hm2)];the S2Q3 treatment(irrigation intensity of 0.33 m3/h) produced the highest yield and water use efficiency,with the yield reaching 4 341.00 kg/hm2;the S3P3 treatment(irrigation frequency of 4 times) exhibited the highest water use efficiency and effective utilization coefficient of irrigation water. The S1D2 treatment showed the highest seed-setting rate(86.14%) and the lowest number of unfilled seeds;the S3P3 treatment had the highest number of filled seeds,seed-setting rate,and flower head diameter,and was significantly superior to the S3P2 and S3P1 treatments(P<0.05). During the budding stage,stem diameter and leaf area of sunflower in the S1D1,S1D2,and S1D3 treatments showed an increasing trend with the increase of irrigation quota;aboveground dry matter weight in the S1D3 and S2Q3 treatments was significantly higher than in other treatments(P<0.05). 【Conclusion】 An irrigation pattern with an irrigation quota of 900 m3/hm2,irrigation intensity of 0.33 m3/h,and irrigation frequency of 4 times is more favorable for enhancing sunflower yield,water use efficiency,and seed quality in the Yanshan hilly region.

Key words: Sunflower, Irrigation quota, Irrigation intensity, Irrigation frequency, Lower irrigation limit, Yield, Water use efficiency

CLC Number: 

  • S565.5