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Journal of Tea Science ›› 2013, Vol. 33 ›› Issue (3): 261-267.doi: 10.13305/j.cnki.jts.2013.03.013

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Effects of Different Potassium Level on Leaf Photosynthesis of Tea Seedling

LIN Zheng-he, ZHONG Qiu-sheng, CHEN Chang-song*, CHEN Zhi-hui, YOU Xiao-mei   

  1. Tea Research Institute, Fujian Academy of Agricultural Sciences, Fu’an 355000, China
  • Received:2012-09-14 Revised:2012-11-13 Online:2013-06-30 Published:2019-09-04

Abstract: Vegetative propagated 10-month-old tea [Camellia sinensis (L.) O. Kuntze cv. Ruixiang] seedlings grown in pots were fertilized three times weekly for 24 weeks with nutrient solution containing 0, 100, 200, 600 or 2β000βμmol/L potassium. The portable photosynthesis system (LI-6400) was used to determine leaf photosynthesis of tea. The result showed that K-deficient leaves showed decreased CO2 assimilation and stomatal conductance, water use efficiency but increased intercellular CO2 concentration. Result also showed that biomass, content of K and chlorophyll were decreased in K-deficient leaves. The tea seeding appeared potassium deficiency symptoms when fertilized with nutrient solution containing 0, 100βμmol/L potassium(K content of leave 6.63βmg/g, 6.85βmg/g).

Key words: tea plant, K deficiency, photosynthesis, chlorophyll

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