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在二年生马尾松幼林（Ⅱ类地、黄红壤）中进行了三种不同比例的施肥试验，施肥后二年的调查结果表明，施肥对马尾松幼树树高生长有一定的促进作用，但未达显著水平，而对幼树地径的生长则有显著的影响，在施肥量相同（150克／株）时，以N：P＝1：2的施肥效果最好。
Three different proportions of fertilization experiments were conducted in the young Pinus massoniana young plantations (class Ⅱ, yellow-red soil). The results of two years after fertilization showed that fertilization promoted the height growth of young P. massoniana trees, but not But significantly affected the growth of sapling diameter. When the fertilizer amount was the same (150g / plant), N: P = 1: 2 fertilization was the best.