%0 Journal Article
%A Chenxia ZHAO
%A Honggang CHEN
%A Huizhen WANG
%A Jie MAO
%A Jinjin MENG
%A Tao DU
%A Xiaojuan XU
%A Ying DUAN
%T Nutrient Absorption Characteristics of <i>Epimedium brevicornu</i> and Its Relationship with Pharmacodynamic Components
%D 2025
%R 10.7525/j.issn.1673-5102.2025.04.004
%J Bulletin of Botanical Research
%P 504-517
%V 45
%N 4
%X <p>In order to explore the absorption and distribution characteristics of nutrient elements and the accumulation of pharmacodynamic components in <i>E. brevicornu</i>， and to clarify the characteristic elements affecting the accumulation of pharmacodynamic components， the dry matter accumulation， nutrient element content and flavonoid content in leaves of 3-year-old <i>E. brevicornu</i> were determined， and the correlation between flavonoid components and nutrient elements in leaves was analyzed. The results showed that （1）with the plant growth， the dry matter accumulation increased first and then decreased， and the dry matter accumulation was rapid and reached the maximum in the post-fruit growth period（T5）. （2）The contents of nitrogen（N） and phosphorus（P） in the upper part showed a decreasing trend at the growth stage， while the contents of potassium（K） in the underground part showed a decreasing-rising-decreasing trend， while the contents of K in the underground part had no obvious change， and the net accumulation of N， P and K was the largest in the fruiting period（T4）. （3）The accumulation of 11 nutrient elements during the growth period was listed in a decreasing order： N&gt;Ca&gt;K&gt;Mg&gt;P&gt;S&gt;Fe&gt;Mn&gt;Zn&gt;Cu&gt;B. （4）The accumulation of flavonoids in leaves increased first and then decreased. （5）The correlation analysis showed that the flavonoid content had synergistic effect with the contents of magnesium（Mg）， iron（Fe） and copper（Cu）， and had antagonistic effect with the contents of boron （B） and manganese（Mn）. Stepwise regression analysis showed that N， calcium（Ca）， Mn and Fe were the characteristic elements that affected the content of flavonoids in leaves. In conclusion， dry matter accumulation and nutrient accumulation of <i>E. brevicornu</i> were the most critical in the fruiting period. The macroelements should be applied before the fruiting period， mainly N and K fertilizers， ensuring the supply of Mg， Fe and Cu. The accumulation of pharmacodynamic components was the largest in the post-fruit growth period. Combined with the results of this experiment and local climatic conditions， it was recommended that the leaves of <i>E. brevicornu</i> in Linxia of Gansu Province and similar areas should be harvested in early September.</p>
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2025.04.004