文献类型：期刊文献

英文题名：Fertilization Improves the Yield of Sapindus saponaria by Affecting Leaf-Soil-Microbial C-N-P Content and Stoichiometry

作者：Liu, Juntao[1,2] Yang, Hongbing[3] Zhou, Ling[1] Zhang, Shangpeng[4] Chen, Jie[5] Wang, Xu[5] Wu, Shixiong[1] Gong, Yingyun[1] Zhang, Guoqing[1] Zhang, Weihua[2] Jia, Liming[1]

第一作者：Liu, Juntao

通信作者：Jia, LM[1];Zhang, WH[2]

机构：[1]Beijing Forestry Univ, Coll Forestry, Key Lab Silviculture & Conservat, Minist Educ, Beijing 100083, Peoples R China;[2]Protect & Utilizat Guangdong Acad Forestry, Guangdong Prov Key Lab Silviculture, Guangzhou 510520, Peoples R China;[3]Chinese Acad Forestry, Natl Forestry & Grassland Adm, Ecol & Nat Conservat Inst, Key Lab Forest Ecol & Environm, Beijing 100091, Peoples R China;[4]Beijing Normal Univ, Beijing 100091, Peoples R China;[5]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China

年份：2025

卷号：14

期号：9

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-105004837870);WOS:【SCI-EXPANDED(收录号:WOS:001486033200001)】；

基金：This study was supported by the National Natural Science Foundation of China (No. 32071793) and the Special Foundation for National Science and Technology Basic Research Program of China (No. 2019FY100803).

语种：英文

外文关键词：Sapindus saponaria; fertilization; microbial nutrient limitation; C-N-P stoichiometry; TOPSIS

摘要：The purpose of this study was to evaluate the effects of different nitrogen (N), phosphorus (P), and potassium (K) fertilization ratios on the carbon (C), N, and P contents and their ecological stoichiometric characteristics in the leaf-soil-microbial system of Sapindus saponaria and elucidate their relationship with yield. A "3414" experimental design was employed in a 6-year-old Sapindus saponaria woodland located in Fujian Province of China. Fourteen N-P-K fertilization treatments with three replicates were established. Leaf, soil, and microbial samples were collected and analyzed for C, N, and P contents. Redundancy Analysis (RDA), Partial Least Squares Path Modeling (PLS-PM), and the entropy-weighted technique of ranking preferences by similarity to optimal solutions (TOPSIS) were utilized to assess the relationships among variables and determine optimal fertilization strategies. It was found through research that different fertilization treatment methods have a significant impact on both the soil nutrient content and the C, N, and P contents of soil microorganisms. Compared with the control group, soil organic C, total N, and total P, and microbial C, N, and P contents increased by 14.25% to 52.61%, 3.90% to 39.84%, 9.52% to 150%, 6.65% to 47.45%, 11.84% to 46.50%, and 14.91% to 201.98%, respectively. Results from Redundancy Analysis (RDA) indicated that soil organic C, total N, and total P exerted a significant influence on the leaf nutrients. PLS-PM demonstrated that fertilization indirectly affected leaf nutrient accumulation and yield by altering soil properties, with soil total phosphorus and leaf phosphorus being key determinants of yield. Additionally, soil microbial entropy impacted yield by regulating microbial biomass stoichiometric ratios. The entropy-weighted TOPSIS model identified the N2P2K2 treatment (600 kg/ha N, 500 kg/ha P, and 400 kg/ha K) as the most effective fertilization strategy. Optimizing N-P-K fertilization ratios significantly enhances leaf nutrient content and soil microbial biomass C, N, and P, thereby increasing Sapindus saponaria yield. This research clarifies the underlying mechanisms through which fertilization exerts an impact on the C-N-P stoichiometry within the leaf-soil-microbial system. Moreover, it furnishes a scientific foundation for the optimization of fertilization management strategies in Sapindus saponaria plantations.