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对粉煤灰复田立地上欧美杨人工幼林施肥效应进行了研究，结果表明：①Ｎ、Ｐ、Ｋ和绿肥肥效均极其显著。相比较而言，Ｎ肥和绿肥肥效高于Ｐ、Ｋ肥。Ｎ、Ｐ、Ｋ和绿肥肥效显著的原因主要是由于立地土壤养分极缺之故；②连续４ａ施肥，最大肥效出现在造林的当年。与对照相比，１５个施肥处理林分树高和胸径在第４年时比对照分别提高４７．７％～７１．７％和３７．７％～７１．７％，表明施肥处理肥效极其显著；③粉煤灰复田立地欧美杨人工幼林最佳施肥方案为：Ｎ（１５０ｇ／株）＋Ｐ（３２．７７５ｇ／株）＋Ｋ（６２．２５ｇ／株）＋（绿肥２０ｋｇ／株）。
The fertilization effects of Populus eucholdi Young Plantation on the site of Futiantian fly ash were studied. The results showed that: ①N, P, K and green manure were extremely significant. In contrast, N fertilizer and green manure fertilizer than P, K fertilizer. The reason that N, P, K and green manure were significant was mainly due to the shortage of soil nutrients in the site. (2) Continuous fertilization for 4 years resulted in the maximum fertilizer effect in the year of afforestation. Compared with the control, the tree height and DBH of the 15 fertilization treatments increased by 47.7% -71.7% and 37.7% -71.7% at the 4th year respectively, which showed that the fertilization efficiency was extremely significant ; (3) The optimal fertilization program of poplar young plantations in Europe, the United States and poplar in the field of Futian was as follows: N (150g / plant) + P (32.775g / plant) + K (62.25g / plant) + (Green manure 20kg / plant).