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WU Jia-sheng, YING Ye-qing, CAO Fu-liang, ZHANG Wang-xiang. Effects of nitrogen application on leaf output and flavone content in ginkgo leaves[J]. Journal of Zhejiang A&F University, 2002, 19(4): 372-375.
Citation: WU Jia-sheng, YING Ye-qing, CAO Fu-liang, ZHANG Wang-xiang. Effects of nitrogen application on leaf output and flavone content in ginkgo leaves[J]. Journal of Zhejiang A&F University, 2002, 19(4): 372-375.

Effects of nitrogen application on leaf output and flavone content in ginkgo leaves

  • Publish Date: 2002-12-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Effects of nitrogen application on leaf output and flavone content in ginkgo leaves

Abstract: In order to study the effects of nitrogen application on leaf output and flavone concentration in leaves of ginkgo seedlings , two-year-old ginkgo seedlings were transplanted and grew in pot culture at five levels of nitrogen(N)supply :0 , 1.5 , 3.0 , 4.5 and 6.0 gseedling-1 .The results of the trial were showed as follows :① Different levels of nitrogen supply had remarkable effects on the leaf output and its component items .With increasing levels of N supply from 0 to 3.0 gseedling-1 there were greater leaf output , single-leaf area , leaf area per seedling and single-leaf weight , while with increasing levels of N from 3.0 to 6.0 gseedling-1 all of the items decreased, which indicated that seedlings were injured by excessive nitrogen supplies .②Different levels of nitrogen application marked effects both on flavone content in leaf and flavone yield in per seedling of ginkgo .Among five treatment of nitrogen application , the treatment 1.5 gseedling-1 had greatest flavone content in leaf and flavone yield in per seedling .③1.5 gseedling-1 should be recommended as the proper amount of nitrogen application for two-year-old leaf-producing plantation of ginkgo , by which greater flavone yield in per unit area could be expected .

WU Jia-sheng, YING Ye-qing, CAO Fu-liang, ZHANG Wang-xiang. Effects of nitrogen application on leaf output and flavone content in ginkgo leaves[J]. Journal of Zhejiang A&F University, 2002, 19(4): 372-375.
Citation: WU Jia-sheng, YING Ye-qing, CAO Fu-liang, ZHANG Wang-xiang. Effects of nitrogen application on leaf output and flavone content in ginkgo leaves[J]. Journal of Zhejiang A&F University, 2002, 19(4): 372-375.

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