N, P, K formulas for fertilization with young Phoebe bournei plantations in Fujian Province
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摘要: 采用3因素2次D-饱和最优设计，在福建明溪进行田间试验，分析了氮、磷、钾及其配比对闽楠Phoebe bournei幼树生长的影响。结果表明：氮、磷、钾肥对闽楠的树高和冠幅生长作用大小依次为氮肥＞磷肥＞钾肥，对粗（地径）生长作用大小依次为磷肥＞氮肥＞钾肥, 且作用效果均为正效应。采用频率分析法对各效应函数进行寻优，结果认为：当目标树高y1120%试验对照（ck），目标地径y2120%试验对照（ck），目标冠幅y3110%试验对照（ck）时，在95%置信区间内，试验地闽楠人工幼林的优化施肥量为氮（N）16.81～21.61 g株－1、磷（P2O5） 5.76～9.64 g株－1、钾（K2O） 3.31～6.44 g株－1，m（氮）∶m（磷）∶m（钾）的最佳比例为3.94∶1.57∶1.00。表3参15Abstract: In order to improve the fertilization effectiveness of young Phoebe bournei plantations. A field experiment was conducted in Mingxi County of Fujian Province based on a D-saturated optimal design with three factors: N, P, and K. The growth effects for young P. bournei plantations were then examined with a frequency analysis and RCB. Results showed that N, P, and K fertilizer efficiency was positive for growth of tree height and crown width （with N＞P＞K） and for increasing diameter at ground-level （with P＞N＞K）. The frequency analysis showed that compared to ck, the expected tree height was 120%, the expected diameter at ground-level was 120% and the expected crown width was 110%. In these experimental plots, optimum fertilization rates （in gtree-1） for young P. bournei plantations were 16.81－21.61 for N, 5.76－9.64 for P2O5, and 3.31－6.44 for K2O with a 95% confidence interval with a frequency analysis method; the best ratio of m（N）:m（P2O5）:m（K2O） was 3.94:1.57:1.00. Then providing the basis for scientific fertilization of P. bournei plantations.［Ch, 3 tab. 15 ref.］
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Key words:
- silviculture /
- Phoebe bournei /
- growth /
- optimal fertilization model /
- N, P, and K application
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.01.013
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