Abstract
Laws of annual nutrient uptake of 8-yr.-old paulownia (Paulownia Sieb. et Zucc) plantation (spacing in row 6m, row spacing 10m) in Fengqiu paulownia experimental spot in Huanghuaihai plain was studied for 2 years by using scientific methods and became clear. Annual total uptakes of 5 macronutrients (N, P, K, Ca, and Mg) in 1989 and 1990 were 287.3238 and 242.4234 Kg/hm2 · a respectively. The study found the following laws; (1) the nutrient uptakes of different paulownia organs came in the following order: foliag> branches> flowers> stems> roots; (2) the uptake of different nutrient elements came in the following sequence: N> Ca> K> P> Mg; (3)paulownia’s uptake rate of nutrient elements was mainly conducted during the period between the beginning of growth and the end of July.
Similar content being viewed by others
References
Jiang Jianping et al., 1989, Studies on Paulownia Plantation Ecosystem IV. The Net Productivity and the Return of Organic Matter, Journal of Henan Agricultural University, Vol. 23 (4):327–337
Jiang Jianping et al., 1985, Studies on Paulownia Plantation Ecosystem II. Seasonal Changes and Biological Cycling of Nutrients of Young Paulownia Forest in the Areas of Sandy Plain, Journal of Henan Agricultural University, Vol. 19 (4) 341–355
Yang Xiu et al., 1993, Study on Nutrient Cycling of Paulownia Plantation Ecosystem, Scientia silvae sinicae, Vol. 29 (2): 158–164
Wu Gang et al., 1993, N, P and K Recycling in Agroforestry Ecosystem of Huanghuaihai Plain: with Paulownia Ecorgata intercropped Wheat and Maize as an Example. Chinese Journal of Applied Ecology, Apr. 4 (2):141–145
Shen Gaofang et al., 1985, Studies on the Nutrient Cycling of Pinus tabulaeformis Plantation I. Content and Distribution of Nutrient Elements, Journal of Beijing Forestry College, (4):1–14
Dong Shiren et al., 1986, Studies on the Nutrient Cycling of Pinus tabulacformis Plantation II. Dynamic properties of the nutrient elements in a Pinus tabulaeformis plantation stand, Journal of Beijing Forestry University, (4): 11–21
W. Ralston, 1978, Mineral cycling in temperate forest ecosystems, Forest soils and land use, Colorado State University Press:320–340
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gang, W., Xiu, Y. Study on laws of annual nutrient uptake in a paulownia plantation. J. Northeast For. Univ. 6, 14–18 (1995). https://doi.org/10.1007/BF02875269
Issue Date:
DOI: https://doi.org/10.1007/BF02875269