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Chinese Agricultural Science Bulletin ›› 2026, Vol. 42 ›› Issue (13): 29-37.doi: 10.11924/j.issn.1000-6850.casb2025-0828

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Ion Absorption Characteristics and Saline-alkali Tolerance Evaluation of Different Sugar Beet Varieties in Hetao Irrigation District

HAN Kang1,2(), HUANG Chunyan1,2(), LI Zhi1,2, GUO Xiaoxia1,2, JIAN Caiyuan1,2, TIAN Lu1,2, LI Yinghao1,2, WEI Zhigang3, ZHAO Zhixia3, AN Jingyuan3, REN Huimin1,2   

  1. 1 Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences, Hohhot 010031
    2 Grassland Talents Innovation Team of Inner Mongolia Autonomous Region (Team for Green Cultivation Technology to Improve Sugar Beet Quality and Efficiency), Hohhot 010031
    3 Bayannaoer Agricultural and Animal Husbandry Research Institute, Bayannaoer, Inner Mongolia 015000
  • Received:2025-09-30 Revised:2026-04-07 Online:2026-07-15 Published:2026-07-09

Abstract:

The purpose of this study is to investigate the ion absorption characteristics and saline-alkali tolerance differences of different sugar beet varieties in the saline-alkali soil of the Hetao Irrigation District, aiming to provide a theoretical basis for selecting salt-tolerant varieties and utilizing saline-alkali land. Using sugar beet varieties ‘KWS1197’, ‘KWS9899’, ‘H7IM15’, ‘KUHN4092’, and ‘SV1752’ as test materials, a field experiment was conducted in typical saline-alkali soil of the Hetao Irrigation District in Inner Mongolia. Yield, sugar content, biomass, photosynthetic parameters, and the concentration and accumulation of cations such as K+ and Na+ in plant tissues were systematically measured. The results showed that ‘KWS1197’ performed best under saline-alkali stress. Its yield (80102.03 kg/hm2) and sugar yield (14122.35 kg/hm2) were significantly higher than those of other varieties, which were 16.99% and 27.14% higher than the lowest-performing variety ‘KWS9899’. The proportion of its root biomass reached 82.1%, and its net photosynthetic rate (Pn), transpiration rate (Tr), and leaf SPAD value were significantly higher than those of other varieties (P<0.05). Ion absorption analysis indicated that ‘KWS1197’ exhibited a capability for sodium exclusion and potassium retention. The Na+ concentration in its roots at the end of the growth period was significantly lower than that in ‘KUHN4092’, while the K+ accumulation in its roots (465.97 g/plant) was significantly higher than that in ‘KWS9899’. In summary, the saline-alkali tolerance of sugar beet is closely related to selective ion absorption, stability of photosynthetic efficiency, and efficient biomass allocation to the roots. ‘KWS1197’ is a superior variety suitable for cultivation in the saline-alkali soil of the Hetao Irrigation District.

Key words: saline-alkali tolerance, sugar beet, variety, cation, ion absorption characteristics

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