| STUDY ON LAWS OF ANNUAL NUTRIENT UPTAKE IN A PAU LOWNIA PLANTATION |
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| 作者姓名： | 吴刚 杨秀 |
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| 作者单位： | Wu Gang (Research Center for Eco-environmental Sciences，Chinese Academy of Sciences)Yang Xiu (Henan Agricultural University，Zhengzhou) |
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| 摘 要： | INTRoDUCTIONl.Paulownia(PaulowniaSieb.etZucc.)isnotonlyoneofthemostimportantfast-growingbutalsoone'ofthelightest,andmostadaptabletimbertreesinChina.Itswoodhaslittledeformationandiseasytodry,moistUreProof,decay-resistance,andthereforewidelyusedinconstrUction,fUrnit-uremaking,indusnyetc..Thebranchesaregoodfirewood,andtheleavesandflowersaregoodfodderforsheepandpigs.xilthebranches,leaves,nowersandhoitshavetheirvalueinmedicaluse.Havingtheexcellentpropertiessuchasfastgrowth,sparsecrown,seepr…
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Study on laws of annual nutrient uptake in a paulownia plantation |
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| Wu Gang,Yang Xiu.STUDY ON LAWS OF ANNUAL NUTRIENT UPTAKE IN A PAU LOWNIA PLANTATION[J].Journal of Forestry Research,1995,6(2):14-18. |
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| Authors: | Wu Gang Yang Xiu |
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| Institution: | (1) Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, China;(2) Henan Agricultural University, Zhengzhou |
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| Abstract: | Laws of annual nutrient uptake of 8-yr.-old paulowia (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 242.4234Kg/hm2 a respectively. The study found the following laws, (1 ) the nutrient uptakes of different paulownia organs came in the following order: foliage> 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 elememnts was mainly conducted during the period between the beginning of growth and the end of July. |
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| Keywords: | Paulownia Plantation Nutrient Uptake |
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