文献类型：期刊文献

英文题名：Growth and mineral nutrient analysis of teak (Tectona grandis) grown on acidic soils in south China

作者：Zhou, Zaizhi[1] Liu, Shichao[1] Liang, Kunnan[1] Ma, Huaming[1] Huang, Guihua[1]

第一作者：周再知

通信作者：Zhou, ZZ[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China

年份：2017

卷号：28

期号：3

起止页码：503-511

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000399164900008)】；

基金：This research was funded by the research and demonstration project of teak cultivation of the Chinese Ministry of Science and Technology (2012BAD21B01).

语种：英文

外文关键词：Acid soils; DRIS diagnosis and norm; Mineral nutrient relationship; Plant mineral nutrition; Soil properties; Teak

摘要：Teak (Tectona grandis L.f.) is widely planted in the world due to its high market demand, economic, ecological and social value. Its plantations have mostly been established and expanded into sites that are acidic to severely acidic in southern China. But, there are no available and specific evidence-based nutrient management techniques. To better recognize and understand the relationship between teak tree growth and nutrient content in the foliage and soil and establish nutrient norms are critical to optimally manage these young plantations. We studied the foliar nutrient and soil chemistry in 19 representative teak plantations aged 5-8 years. Regression analysis indicated that the mean annual increment of teak volume was linearly and positively correlated with foliar N, Ca, Fe and B concentrations, with soil base saturation percentage, available P and Zn concentrations, and negatively correlated with soil Al concentration. Only if the Ca and Mg contents in soil were enhanced, could the increase in soil base saturation percentage benefit teak growth. A revised classification of low-and high-yielding stands was established by using a sorting method of principal components over 6 foliar macro and 8 micro elements in a Diagnosis and Recommendation Integrated System (DRIS). Specific DRIS norms for teak plantations in acid soils were derived. The nutrient balance of N, P, K Ca, Mg, Zn, B with Fe or Al, Ca with Mg, and Fe with Al provided a key to promote the growth of teak in acid soils. Meanwhile, soil Zn was also found as a primary trace element that affected teak growth in this study.