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《Hubei Forestry Science and Technology》 2015-01
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Analysis on the Annual Dynamic Changes of Element Content in Paulownia fortunei Leaves

Lv Zhihai;Wu Gaosheng;Wang Wei;Lin Yinhai;Ding Yi;Wang Shuangsheng;Ye Rong;Chibi City Forestry Bureau;Hubei Provincial Pengfa Forestry Co.Ltd.;Xianning City Forestry Bureau;  
Aiming at studying the annual dynamic changes of the macroelement and microelement in Paulownia fortunei leaves,we chose three provenances to determine their content in the leaves,which were collected every fifteen days during the period from leaf expansion to the beginning of leaf abscission.The results indicated that the changing trends of the content of three main elements in the leaves of different provenances of Paulownia fortunei are consistent;In mid-to-late April,the nutritional ingredient content of the leaves was high,and N element content was always in the high level,and P and K element content decreased to the lowest in the wilt period of the leaves with the loss of leaves;Microelements of calcium and magnesium were found in relatively high level in leaves,and copper and manganese were low in the whole growth process,and iron and magnesium kept relatively high when leaves were falling.Attention should be paid on applying N fertilizer and adding iron and calcium fertilizer in time in order to ensure the rapid growth of the trees.
【Fund】: 国家林业公益性科研专项“泡桐基因库与育种群体建立技术研究”(200804021)
【CateGory Index】: S792.43
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