摘要
利用2006年春栽植在浙江省淳安县富溪林场龙门里苗圃的三尖杉1年生苗和2年生苗营造的幼林分别开展施肥实验,施肥处理采用3因素4水平正交设计,结果表明,在土壤肥力中下,N、P及有机质含量稍低的情况下,N、P、K适当配比施肥能显著促进三尖杉生长,但过量施肥,则会抑制其生长。N、P、K不同配比施肥对三尖杉幼林生长的影响差异显著,当年抽梢长度、当年地径年生长量、次年抽梢长度、次年地径年生长量和次年分枝数指标,施肥处理的1年生苗造林幼林分别比不施肥的对照高23.51%、25.00%、50.05%、28.79%和22.67%,2年生苗造林幼林则分别比不施肥的对照高60.10%、7.41%、18.50%、55.39%、41.67%和8.94%。多数生长性状的N×P互作效应显著,配比施用N、P能显著促进三尖杉幼林生长。根据抽梢长度和地径生长量指标得出的三尖杉幼林最佳N、P2O5和K2O的配比施肥量为6.0、6.0和1.5 g/株。
Fertilization experiment with 3 factors and 4 levels was carried out in Cephalotaxus fortunei stands planted with 1-year and 2-year seedling in Fuxi Forest Centre, Chun＇an of Zhejiang province. The result showed that application with combined fertilization of N, P and K could obviously promote increment of C. fortunei, but excessive fertilization would reduce the growth, under site condition of medium or poor soil fertility, lower content of N, P and organic matter. Application of different ratio of N, P and K had significant differences among young growth. Sprout length, diameter growth of the current year and the next year and branch number of the next year for 1-year seedlings plantation with fertilization were 23.51%, 25.00%, 50.05%, 28.79% and 22.67% respectively higher than that in the control. Sprout length, diameter growth and branch number of the current year and the next year for 2-year seedlings plantation with fertilization were 60.10%, 7.41%, 18.50%, 55.39%, 41.67% and 8.94% respectively higher than that in the control. Interaction of N and P was significant and combined fertilization could obviously promote the growth of C. fortunei. The result demonstrated that the most appropriate combined fertilization quantity of N, P2O3 and K2O was 6.0g, 6.0g and 1.5g per plant.
出处
《浙江林业科技》
北大核心
2008年第2期11-16,共6页
Journal of Zhejiang Forestry Science and Technology
基金
浙江省科技计划项目(2005C32035)
关键词
三尖杉
配比
施肥
幼林
生长
Cephalotaxusfortunei
combined fertilization
increment of young stand
