油用牡丹对钙镁硫元素吸收和积累规律的研究

Absorption and Accumulation Rules of Calcium,Magnesium and Sulfur in Paeonia suffruticosa

为明确油用牡丹植株对Ca、Mg、S的吸收规律,为油用牡丹专用肥配制及合理施用提供参考,本研究以5年生油用牡丹‘凤丹’为试验材料,使用电感耦合等离子体光谱仪测定油用牡丹生长发育过程中叶片、新枝、老枝、根和果荚中Ca、Mg、S元素的含量和积累量,分析其不同器官中三种元素含量和积累量的年变化规律。结果表明:在油用牡丹的年生长周期中,其对各元素的吸收量与积累量存在差异,各时期均表现为Ca>Mg>S;油用牡丹对Ca、Mg、S的年吸收量分别为4.99g/株、0.33g/株和5.92mg/株,吸收比约为843∶56∶1;盛花期(5月)到果荚发育期(6月)是Ca、Mg、S的吸收活跃期。相关性分析表明,油用牡丹植株中Ca、Mg、S的积累量间存在极显著正相关。

In order to understand the absorption rule of calcium(Ca),magnesium(Mg)and sulfur(S)in oil peony(Paeonia suffruticosa)and provide references for the preparation of special fertilizer and rational fertilization for oil peony,five-year-old P.ostia T.Hong et J.X.Zhang plants were selected as the experimental material.The contents and accumulation of Ca,Mg and S in leaves,new branches,old branches,roots and pods were determined by ICP-AES.The annual variation rule of contents and accumulation of the three elements in different organs were analyzed.The results showed that there were differences in absorption and accumulation of elements in the annual growth cycle of oil peony,which showed as Ca>Mg>S.The annual absorption of Ca,Mg and S per individual plant reached 4.99,0.33 g and 5.92 mg,respectively,with the ratio of 843∶56∶1.The most active absorption period of Ca,Mg and S was from flowering in May to pod development in June.The correlation analysis showed that there were extremely significantly positive correlations between the accumulation of Ca,Mg and S.