Magnetized and Aerated Irrigation Promotes Nitrogen Dynamics and Metabolite Accumulation in Salvia miltiorrhiza

Yaofang Fan, Weixin Zhao, Yixin Zhang, Xiangnian Zhu, Ai-Bosheng Aerdake and Tong Heng ()
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Yaofang Fan: College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Weixin Zhao: College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Yixin Zhang: College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Xiangnian Zhu: College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Ai-Bosheng Aerdake: College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
Tong Heng: College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China

Agriculture, 2025, vol. 15, issue 21, 1-18

Abstract: The cultivation of Salvia miltiorrhiza in arid regions is challenged by limited water availability and suboptimal soil aeration, which constrain nitrogen uptake and the accumulation of secondary metabolites. This study evaluated the integrated effects of magnetized and aerated irrigation on mitigating these constraints. Results indicated that the combined magnetized and aerated irrigation treatment demonstrated remarkable efficacy, achieving a 25.2% increase in soil nitrate nitrogen availability and 36.1% enhancement in root dry matter weight. Crucially, this optimized rhizosphere environment preferentially boosted the biosynthesis of salvianolic acid B and key tanshinones (T. IIA, Cryptotanshinone, T. I), with content increases exceeding 22% compared to conventional irrigation, representing substantial improvements in the herb’s therapeutic value. Water terminal magnetization proved superior to water source positioning, while aerated irrigation enhanced soil nitrification more effectively than magnetization alone. By concurrently improving rhizosphere oxygenation and creating favorable conditions for nutrient uptake, this strategy offers a sustainable approach for improving the quality and biomass of Salvia miltiorrhiza in water-limited environments.

Keywords: nitrogen uptake; rhizosphere environment; dry matter weight; magnetic field treatment; secondary metabolites (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2025
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