本文是近几年来在南京林产工业学院苗圃所进行的肥料试验的总结。试验材料是当前林业生产上的重要树种水杉(Metasequoia glyptostrobides)、湿地松(Pinus elliottii)、火炬松(Pinus taeda)、健杨(Populus euramericana f.robusta)以及其他一些树种。试验地的土壤为下蜀黄土所发育的黄棕壤。下面仅就试验结果讨论几个问题。为便于比较起见,本文有关数据都以净面积计算。 This article is a summary of fertilizer tests conducted at the nursery of Nanjing Institute of Forestry in recent years. The test material is currently the major tree species for forestry production Metasequoia glyptostrobides, Pinus elliottii, Pinus taeda, Populus euramericana f.robusta and other species. The soil of the experimental site is the yellow brown soil developed in Xiashu loess. The following discussion of the test results only a few questions. For the sake of comparison, the data in this paper are calculated as net area.