期刊
SCIENTIA HORTICULTURAE
卷 123, 期 2, 页码 253-257出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scienta.2009.08.006
关键词
P. tricuspidata; Nitrogen; Phosphorus; Potassium; Water stress; Vector analysis
类别
资金
- National Science & Technology Pillar Program [2008BADA4B03]
- National Natural Science Foundation of China [30871595]
- Science and Technology Cooperation Project of Ningbo, China [2005C100041]
A climate-controlled greenhouse experiment was conducted to determine the influence of soil water stress on the nutrient status of a climbing plant, Parthenocissus tricuspidata (Sieb.et Zucc) Planch. The results showed that water stress constrained N uptake more than P and K uptake in P. tricuspidata. Soil water supply significantly affected N efficiency ratio, but had no effect on P and K efficiency ratios. P. tricuspidata had low K concentration (<10 mg g(-1)) in all its plant tissues, which allowed the plant to limit its stomatal opening and reduce its water loss. The study revealed that P. tricuspidata is able to adjust biomass distribution, nutrient uptake and nutrient use efficiency in response to soil water stress and that nutrient management for this plant under water stress should focus on N more than on P and K. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.
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