文献类型：期刊文献

英文题名：Optimal Dark Tea Fertilization Enhances the Growth and Flower Quality of Tea Chrysanthemum by Improving the Soil Nutrient Availability in Simultaneous Precipitation and High-Temperature Regions

作者：Hou, Jiayi[1,2] Yin, Jiayuan[1,2] Liu, Lei[3] Xu, Lu[1,2]

第一作者：Hou, Jiayi

通信作者：Xu, L[1];Xu, L[2]

机构：[1]Hunan Agr Univ, Coll Hort, Hunan Midsubtrop Qual Plant Breeding & Utilizat En, Changsha 410128, Peoples R China;[2]Yuelushan Lab, Changsha 410128, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Forest Genet & Tree Breeding, Key Lab Silviculture State Forestry Adm, Beijing 100091, Peoples R China

年份：2025

卷号：15

期号：7

外文期刊名：AGRONOMY-BASEL

收录：;Scopus(收录号：2-s2.0-105011831233);WOS:【SCI-EXPANDED(收录号:WOS:001539786200001)】；

基金：This study was supported by the Research Projects on Teaching Reform in Regular Higher Education Institutions in Hunan Province (HNJG-2022-0103), a project funded by the Hunan Provincial Department of Education.

语种：英文

外文关键词：dark tea biofertilizer; Dendranthema morifolium 'Jinsi Huang'; flower functional components; morphological traits; photosynthetic traits; soil environment

摘要：The simplex strategies of fertilizer management and problems caused by simultaneous precipitation and high-temperature (SPH) climate were the main factors that led to yield loss and quality decline in the continuous cropping of tea chrysanthemum (Dendranthema morifolium 'Jinsi Huang'). In this study, with sustainable biofertilizers being proposed as a potential solution. However, their effects under such constraints are underexplored. In this study, we compared different proportions of a sustainable dark tea biofertilizer, made with two commonly used fertilizers, by their contributions to the morphological, photosynthetic, and flowering traits of D. morifolium 'Jinsi Huang'. The results showed that increasing the dark tea biofertilizer application to 4.5 kgm-2 significantly enhanced the soil alkali hydrolyzed nitrogen (596.53% increase), available phosphorus (64.11%), and rapidly available potassium (75.56%) compared to the levels in yellow soil. This nutrient enrichment in soil caused D. morifolium 'Jinsi Huang' to produce more leaves (272.84% increase) and flower buds (1041.67%), along with a strengthened photosynthetic capacity (higher Fv/Fm values and light saturation point). These improvements alleviated the photoinhibition caused by SPH climate conditions, ultimately leading to significantly higher contents of chlorogenic acid (38.23% increase) and total flavonoids (80.28%) in the harvested flowers compared to the control group. Thus, dark tea biofertilizer is a cost-effective and efficient additive for growing tea chrysanthemum in SPH regions due to improving soil quality and causing nutritional and functional components to accumulate in harvest flowers, which greatly promotes the commercial value of rural revitalization industries centered around tea chrysanthemum.