Harnessing water and salt synergy: Elevating Panax notoginseng growth and quality under drip irrigation in southwest China

作者：Tianqi Mu, Chunwei Ji, Zhennan Zang, Yinbo Wang, Qiliang Yang, Jiaping Liang, Haidong Wang, Jinjin Guo, Na Li, Xiaogang Liu · 发表于：Soil Use and Management · 年份：2025 · DOI：10.1111/sum.70000 · 被引用次数：1 · 研究领域：Irrigation Practices and Water Management、Plant responses to water stress、Polysaccharides and Plant Cell Walls

Abstract Panax notoginseng is primarily cultivated in Yunnan Province, China. However, unsound field management practices aimed at increasing yields lead to imbalanced soil moisture, increased rhizome rot, and reduced crop quality, challenging the sustainable development of the P. notoginseng industry. This experiment proposed a rational water salt management strategy to improve growth and quality, offering guidance for sustainable production. A field experiment was conducted under shaded, rain‐shelter conditions with drip irrigation for 1 year. Two irrigation levels were applied based on field capacity (FC): W 1 (irrigation lower limit at 90% FC) and W 2 (irrigation lower limit at 80% FC). Additionally, three soil salinity levels were established with electrical conductivity values of E 1 : 130 μS cm −1 , E 2 : 150 μS cm −1 , and E 3 : 170 μS cm −1 . A control group (CK) without salt stress was also included to compare the effects of irrigation and salinity on growth, quality, and productivity. Results showed that the combined water and salt management reduced pathogen abundance. Ectomycorrhizal fungi, promoting plant growth, were detected under W 2 E 2 . During the reproductive phase, plant height increased gradually and stabilized by the fruiting stage, while stem diameter initially decreased and then stabilized. Growth indicators peaked during the fruiting stage, with a maximum plant height of 29.87 cm and stem diameter of 4.75 mm. Optimal root characteristics were observ...