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经５ ａ 研究结果表明，在云南省保山市石灰岩红壤地区施肥能明显促进蓝桉幼林生长，肥效在１．５ ａ时最大，９ 个施肥处理的树高、胸径平均增长３３．６９％ 、４８．３９％ ，造林后５ ａ 时，生长反应已经呈下降趋势，９ 个施肥处理的树高、胸径平均增长１６．４５％ 、１０．７１％ 。Ｐ肥是促进蓝桉增产的主要因素，每株施４３０ ｇ 钙镁磷肥的几个处理增产效果较好，Ｎ、Ｋ 肥增产效果不明显，有机肥对蓝桉生长有促进作用。在９ 个施肥处理中，处理６（钙镁磷肥做底肥，用量４３０ ｇ·株－ １，追施尿素６５ ｇ·株－ １ ）、处理９（钙镁磷肥做底肥，用量４３０ ｇ·株－ １，追施尿素１３０ ｇ·株－ １，追施氯化钾５４ ｇ·株－ １）、处理１０（在处理９ 的基础上增施５ ｋｇ 有机肥）肥效明显。经济效益最佳的处理为处理６ 和处理９
The result of 5 years showed that applying fertilizers in the limestone red soil area of Baoshan, Yunnan Province could significantly promote the growth of young plantations of Eucalyptus globulus, and the maximum effect was obtained at 1.5 years. The tree height and DBH of 9 fertilizers increased by 33.69% and 48%, respectively .39%. After 5 years of afforestation, the growth response had a downward trend. The tree height and DBH of 9 treatments increased 16.45% and 10.71% on average. P fertilizer was the main factor to promote the yield of Eucalyptus globulus. Each plant applied 430 g of Ca, Mg and P fertilizers to improve yield, N and K fertilizer did not produce obvious effects and organic fertilizer could promote the growth of Eucalyptus globulus. In the 9 fertilization treatments, 6 (Calcium Magnesium Phosphate Fertilizer, 430 g · plant - 1, topdressing urea 65 g · plant - 1) 1, topdressing urea 130 g · strain - 1, topdressing potassium chloride 54 g · strain - 1), treatment 10 (adding 5 kg of organic fertilizer on the basis of treatment 9) had obvious fertilizer effect. The most cost-effective treatments are Treatment 6 and Treatment 9