湘西南酸枣、闽楠和蓝果树的营养元素含量及吸收规律.pdf

Hans Journal of Agricultural Sciences 农业科学, 2013, 3, 16-21 doi:10.12677/hjas.2013.31004 Published Online March 2013 (/journal/hjas.html) Characteristics of Nutrient Absorption in Nyssa sinensis, Phoebe bournei and Choerospondias axillaris from * Xiangxi 1 2 1# 1 3 Qin Zeng , Jinhua Li , Zhihui Li , Wengui Ge , Shengzhi Yang 1Central South University of Forestry and Technology, Changsha 2National Forestry Bureau, Beijing 2Xiangxi Forest Ecological Research Station of Hunan Province, Xiangxi Email: lzh1957@126.com Received: Feb. 22nd th th , 2013; revised: Feb. 24 , 2013; accepted: Mar. 12 , 2013 Abstract: The nutrient elements of Nyssa sinensis, Phoebe bournei and Choerospondias axillaris from Xiangxi Ecology Station were investigated in this study. The results showed that the nutrient contents in the organs of three trees were leaf bark twig root trunk. The absorption of nutrient elements in the leaves were N Ca Mg K P Mn Fe Zn Cu. Calcium was determined as dominant nutrients in the leaves of the karst forest trees. C. axillaris was able to accumulate more macro-elements than other two trees, and the highest accumulation of micro-elements was found in P. bournei. N. sinensis and C. axillaris had an excellent ability to enrich Mg. N. sinensis was defined as the P limited plants based on the ratio of the elements in the leaves. The ratios of N/P, K/Ca an