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林业科学 ›› 1999, Vol. 35 ›› Issue (zk): 106-112.

• 土壤肥力监测 • 上一篇    下一篇

杨树不同土壤立地条件施肥效应的研究*

王少元1,何应同1,曾祥福1,郑红波1,彭锦云2   

  1. 1. 湖北省林业科学研究院 武汉 430075
    2. 湖北省林业厅 武汉 430060
  • 出版日期:1999-01-25 发布日期:1999-09-25

EFFECTS OF FERTILIZATION IN THE DIFFERENT SITE TYPES OF SOIL FOR POPLAR TREE

Shaoyuan Wang1,Yingtong He1,Xiangfu Zeng1,Hongbo Zheng1,Jinyun Peng2   

  1. 1. Forestry Institute of Hubei Province Wuhan 430075
    2. Forestry Department of Hubei Province Wuhan 430060
  • Online:1999-01-25 Published:1999-09-25

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

关键词: 南方型杨树, 土壤立地, 施肥效应

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(total): 400kg N/hm2 for siteⅠ; (200kg N+100kg P2O5)/hm2 for site Ⅱ; (100kg N+100kgP2O5)/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).

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