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ACTA HORTICULTURAE SINICA ›› 2010, Vol. 37 ›› Issue (2): 277-282.

• 观赏植物 • Previous Articles     Next Articles

Studies on Year-cycle Changes of Leaf Nutrient Status from Camphor Tree

LI Li-min1,2;WU Liang-huan1,2,*;MA Guo-rui1   

  1. ( 1Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Natural Resources and Environmental Science, Zhejiang University, Hangzhou 310029, China; 2 Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China)
  • Received:2009-08-31 Revised:2010-01-14 Online:2010-02-25 Published:2010-02-25
  • Contact: WU Liang-huan1

Abstract: The year-cycle changes of leaf nutrient status of normal and chlorosis camphor trees grown in calcareous soil were surveyed in coastal regions on the north shore of the Qiantang River of Hangzhou city. The results indicated that leaf total P of chlorosis trees were higher than normal trees, while active Fe, total Fe, total N, total K, SPAD value, peroxidase and catalase activities were lower. Among four sampling times, the order of chlorosis from light to heavy was August in 2007 > June in 2007 > March in 2007 > October in 2006. The results also showed antagonism of leaf total P and active Fe, while the remaining elements and physiological indexes were synergy. On this basis a new fertilizing method of camphor was recommended to provide for treating and preventing of chlorosis camphor.

Key words: camphor-tree, calcareous soil, leaf, chlorosis, treating