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Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (7): 819-822.

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Effects of decapitation on growth, uptake and distribution of potassium in tobacco

GUO Lizhuo, ZHANG Fusuo, LI Chunjian   

  1. Key Laboratory of Plant Nutrition of Ministry of Agriculture, China Agricultural University, Beijing 100094
  • Received:2000-10-30 Revised:2001-03-26 Online:2002-07-15

Abstract: Compared with intact plants, decapitation did not cause increase in dry weight of tobacco plant and in potassium accumulation8 weeks after the treatment. In intact plants, about 1/3 of assimilation and potassium were transported into the top, and only about 1/3 of those deposited in the leaves. Decapitation resulted in about 1/2 of assimilation and potassium distributing in the leaves, so it was more effective. Application of NAAon the stump of the stem did not influence leaves yields, but accumulation of potassium in the upper and middle leaves was enhanced.

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