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在云南省保山市石灰岩红壤地区进行了历时4年的蓝桉幼林N、P、K不同配比的10种处理施肥试验。结果表明，施肥能明显促进蓝桉（Eucalyptusglobulus）幼林的生长；其中处理6、9、10增产效果极显著，树高增加16．31％～20．40％，胸径分别增加18．78％～19．21％，材积增加65．04％～70．19％。有机肥对蓝桉生长有促进作用，施过有机肥的处理10生长始终保持优势；磷肥是蓝桉增产的主要因素，每株施430g钙镁磷肥做底肥能使树高、胸径分别增加14．67％、15．87％，每株施215g钙镁磷肥则树高、胸径分别增加11．44％、7．83％；氮肥各水平间无差异，增产效果不明显；钾肥1、2水平间无差异，3水平可能过量，阻碍了肥效发挥。施肥能提高蓝桉生产的经济效益，较好的几个处理依次为6、9、2、10、3产出投入比值均大于对照。综合以上几个因素，N2P3K2为蓝桉幼林的最佳施肥方案。
In the limestone red soil area of Baoshan City, Yunnan Province, 10 treatments of N, P, K with different proportions of young Eucalyptus globulus four years old were conducted. The results showed that the fertilization could significantly promote the growth of young Eucalyptus globulus forest. The yield of 6, 9 and 10 treatments was extremely significant, the tree height increased by 16.31% ~ 20.40%, the DBH increased by 18.78% ~ 19 .21%, volume increased 65.04% ~ 70.19%. Organic manure can promote the growth of Eucalyptus globulus. The growth of organic eucalyptus fertilizer tended to be superior all the time. Phosphate fertilizer was the main factor for the yield increase of Eucalyptus globulus. 67% and 15.87% respectively. The height and DBH of 215g Ca-Mg-P fertilizer per plant were increased by 11.44% and 7.83%, respectively. There was no difference between the levels of nitrogen fertilizer and the yield increase was not obvious. No difference, 3 levels may be excessive, hinder the effectiveness of fertilizer. Fertilization can increase the economic benefits of the production of blue eucalyptus, the better of several treatments followed by 6,9,2,10,3 output ratio were greater than the control input. Based on the above several factors, N2P3K2 is the best fertilization program for young Eucalyptus globulus.