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氮磷钾配比施肥对杂交鹅掌楸幼林初期生长的影响(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2011年04期
Page:
27-33
Column:
研究论文
publishdate:
2011-07-31

Article Info:/Info

Title:
Effect of combined fertilization of NPK on initial growth of young Liriodendron chinese×L.tulipifera plantation
Author(s):
CAI Weijian1DOU Xiao1GAO Handong12* WANG Zhangrong1 YU Zhengfa3
1.College of Forest Resources and Environment,Nanjing Forestry University,Nanjing 210037, China;2.Southern Tree Seed Inspection Center of National Forestry Administration, Nanjing 210037, China;3.Hubei Tiande Forestry Development Co., Ltd., Jingshan 431811, China
Keywords:
Liriodendron chinese×L.tulipifera NPK ratio intital growth of young plantation
Classification number :
S718
DOI:
10.3969/j.jssn.1000-2006.2011.04.006
Document Code:
A
Abstract:
With three factors design of universal quadratic rotation combination, the models were established on the effects of N, P and K fertilizer on growth of young plantation of Liriodendron chinese×L.tulipifera in the condition lacks P element. According to the test results, the quadratic regression model had better simulation effect of 1year plantation on height and volume, 2year plantation on diameter, while hardly effect on other growth targets. Through the analysis of the main effect of fertilizer, it showed that N, P and K had different influences on young plantation: P had the most dramatic influences, but N and K could also help promote the growth of young plantation. Twofactor interaction analysis showed that there was significant interaction between two fertilizer factors that could promote the plantations grow, among of which, N and P, P and K had more intensive interaction. By computer simulating, the optimum fertilization combination for growth of young plantation was urea 44—65 g per plant, superphosphate 188—261 g per plant and potassium chloride 26—44 g per plant, with the average increment of plant 1year height, volume and 2year diameter were (38.6±0.8) cm, (58.7±1.4) cm3 and (1.38±0.01) cm.

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Last Update: 2011-08-13