Growth, biomass accumulation and foliar nutrient status in fragrant rosewood (Dalbergia odorifera TC Chen) seedlings cultured with conventional and exponential fertilizations under different photoperiod regimes

文献类型： 外文期刊

第一作者： Li, Xiaowen

作者： Li, Xiaowen;Gao, Yuan;Xia, Haitao;Chen, Qiuxia;Gao, Yuan;Wei, Hongxu

作者机构：

关键词： Huanghuali;nutrient loading;prolonged photoperiod;fertilizer application;nursery culture

期刊名称：SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：2.389； 五年影响因子：2.525 ）

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年卷期：

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收录情况： SCI

摘要： In this study, fragrant rosewood (Dalbergiaodorifera T.C. Chen) seedlings were cultured with conventional and exponential fertilization treatments at rates of 2 and 4g plant(-1) (15-9-12), and an unfertilized control under the natural photoperiod and extended photoperiods with supplementary lighting for 3 and 6h. Seedlings under the extended photoperiods had greater height but less root-collar diameter than those under the natural photoperiod. The extended photoperiod with supplementary lighting for 3h resulted in the greatest biomass in stem and root. Apparent nutrient dilution was found from October 2015 to January 2016 in most fertilization treatments, which, however, was counted by the treatment of exponential fertilization at 4g plant(-1). Vector analysis indicated that the treatment of extended photoperiod with supplementary lighting for 3h induced nutrition depletion for nitrogen (N) and phosphorus (P) relative to the natural photoperiod, while the exponential fertilization treatment induced luxury consumption for all elements of N, P and potassium (K) relative to the control. In conclusion, the extended photoperiod of supplementary lighting for 3h was recommended for the culture of fragrant rosewood seedlings, and the exponential fertilization resulted in better nutritional status by counting nutrient dilution relative to the conventional fertilization.

分类号： S15

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