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为探索南方型杨树不同土壤立地条件集约栽培途径，在江汉平原选择有代表性的3种土壤立地，进行氮、磷、钾常规肥料不同施肥量及配比施肥试验（1991～1995）。结果表明：氮肥效应普遍显著；单施磷、钾肥效应均不好。平原粘湿土壤还呈显著负效应，只宜单施氮肥；平原冲积上、湖区沉积土立地均以氮＋磷混施效应最佳。优化施肥量：平原粘湿上按400kgN／hm2、平原冲积土按200kgN／hm2＋100kgP2O5／hm2、湖区沉积土按100kgN／hm2＋100kgP2O5／hm2，分别折算成尿素或过磷酸钙施用。5a提高蓄积生长量35％～80％，增值额0．7～1．1万元／hm2。
In order to explore the intensive cultivation of different types of soil in southern poplar, three representative soil types were selected in the Jianghan Plain, and different fertilizers and fertilization experiments (1991-1995) were carried out for conventional fertilizers of nitrogen, phosphorus and potassium. The results showed that: the nitrogen effect is generally significant; single application of phosphorus and potassium are not good. Plain sticky soil also showed a significant negative effect, only nitrogen should be applied alone; alluvial plain, lake sediment sites were nitrogen + phosphorus mix effect best. Optimize the amount of fertilizer: plain sticky wet according to 400kgN / hm2, plain alluvial soil by 200kgN / hm2 +100 kgP2O5 / hm2, lake sediment by 100kgN / hm2 +100 kgP2O5 / hm2, were converted into urea or superphosphate application. 5a increase the volume of growth of 35% to 80%, the value of 0.7 to 11,000 yuan / hm2.