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作 者 ：王少元 何应同 曾祥福 郑红波 彭锦云

期 刊 ：林业科学 1999年 35卷 zk期 页码：106-112

关键词：南方型杨树；土壤立地；施肥效应；

Keywords:Southern type of poplar tree, Site type of soil, The effect of fertilization,

摘 要 ：在湖北省江汉平原选择有代表性的3种土壤立地,进行南方型杨树氮、磷、钾常规肥料多点施肥试验(1991～1995)。结果表明:施氮肥能显著促进杨树生长,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;平原冲积土、湖区沉积土立地均以氮+磷混施效应最佳。优化施肥量:平原粘湿土立地按400kgN/hm²、平原冲积土立地按200kgN/hm²+100kg₂O₅、湖区沉积土立地按100kgN/hm²+100kgP₂O₅/hm²,折算成尿素和过磷酸钙。5年提高蓄积生长量35%～75%,纯增益6000～11000元/hm²。

Abstract:A test of the effects of fertilization was done with fertilizing the ordinary N，P，K elements from 1991～1995 in several experimental areas selected from three representative site types of Soil in Jianghan plain，Hubei Province．The results shows：Overall significant effects of single N element；Overall bador not better effects of single P or K element，even a significantly negative effect in wet clay soil of theplain(siteⅠ)which is only suitable for single N element；The best effect of mixed N and P elements in theplain alluvial soil(site Ⅱ)and sedimentary soil in the lake region(site Ⅲ)；The best application rate(to—tal)：400kg N/hm² for siteⅠ；(200kg N+100kg P₂O₅)/hm₂ for site Ⅱ；(100kg N+lOOkgP₂O₅)/hm²for site Ⅲ；fertilizers are urea for N，calcium superphosphate for P₂O₅，respectively；35％～75％increment in growing stock，which is equal to increasing 6～11 thousand yuan/hm² in total within five years(1991～1995)．

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