Panax notoginseng (Burk) F. H. Chen, called Sanqi, is a valuable herbal plant and is widely used in Chinese medicine. However, the yield and saponin content cannot be guaranteed due to irrational irrigation and fertilizer management in low-latitude regions in southwestern China. To obtain suitable irrigation and organic fertilizer modes for improving the yield and saponin content of the plant, a shelter experiment was conducted using a randomized complete block design with a factorial arrangement of treatments with three replications. Three irrigation regimes, D_L, D_M and D_S (irrigation upper/lower limit: 65–50% θ_f, 50–35% θ_f, and 35–20% θ_f, respectively, where θ_f is the field capacity), three organic fertilizer levels, F_L, F_M and F_H (33, 48 and 63 t ha⁻¹, respectively), and a control group, CK (65–50% θ_f and 3 t ha⁻¹), were applied in the two-year and eight-month growth cycles. With the paired comparison design, the results indicated that the flower dry yield, root dry yield and Panax notoginseng saponins (PNS) were significantly affected by different water deficit irrigation and organic fertilizer treatments, and they first increased and then decreased with increased water deficit or organic fertilizer. Compared with D_LF_H, D_MF_M reduced water use by 42.39% and fertilizer use by 23.81%, and the flower dry yield, root dry yield, PNS, water use efficiency and partial factor productivity of fertilizer increased by 19.67%, 22.52%, 54.33%, 149.72% and 91.83%, respectively. Under the D_MF_M treatment, the dry root yield and saponin content for 3-year-old P. notoginseng were 3039.19 kg ha⁻¹ and 10.85%, respectively, which were higher than those resulting from other treatments. Additionally, the PNS resulting from D_MF_M exhibited the highest comprehensive score and comprehensive index based on principal component analysis and the TOPSIS model. This combination could create a higher yield of flowers and roots, provide a scientific management for planting, and improve the economic benefits for planters and the local government.

三七( Panax notoginseng (Burk) FH Chen) 又名三七，是一种名贵的草本植物，广泛用于中药。但由于西南低纬度地区灌溉施肥管理不合理，产量和皂苷含量无法保证。为了获得合适的灌溉和有机肥模式以提高植物的产量和皂苷含量，采用随机完全区组设计，因子排列处理，3次重复，进行遮蔽试验。三种灌溉方式，D _L、D _M和 D _S（灌溉上限/下限：65–50% θ _f、50–35% θ _f, 和 35–20% θ _f，其中θ _f是田间持水量）、三个有机肥水平 F _L、F _M和 F _H（分别为 33、48 和 63 t ha ^-1），以及一个对照组，CK（65-50% θ _f和 3 t ha ^-1），应用于两年和八个月的生长周期。通过配对比较设计，结果表明，花干产量、根干产量和三七总皂苷（PNS）受不同缺水灌溉和有机肥处理的影响显着，随着缺水或有机肥的增加，它们先增加后减少。与 D _L F _H相比，D _M F _M减少用水量 42.39%，减少肥料用量 23.81%，花干产量、根干产量、PNS、水分利用效率和肥料部分要素生产率提高 19.67%，分别为 22.52%、54.33%、149.72% 和 91.83%。在D _M F _M处理下，3年生三七的干根产量和皂苷含量为3039.19 kg ha ^-1和 10.85%，分别高于其他处理的结果。此外，基于主成分分析和TOPSIS模型，D _M F _M得到的PNS表现出最高的综合得分和综合指数。这种组合可以创造更高的花卉和根系产量，为种植提供科学的管理，提高种植者和当地政府的经济效益。