摘要
通过盆栽和大田试验,探讨脱硫副产物对桉树Eucalyptus营养作用及其机理。结果表明:①供试物施用量4 15g·kg-1时,玄武岩砖红壤上桉树氮、磷、钾、钙、镁、硫和硼养分吸收量分别比对照高61%,44%,39%,90%,81%,21%和146%,浅海沉积砖红壤上桉树养分吸收量也较对照大幅增长,供试物施用有显著促进桉树养分吸收的效应,但施用量高于8 03g·kg-1或低于2 76g·kg-1时对桉树养分吸收的促进作用不明显。②盆栽及大田试验均表明,适量施用供试物可显著促进桉树生长,提高其生物量。其中,供试物施用量4 15g·kg-1时,玄武岩砖红壤上桉树单株根质量、干质量、叶质量分别比对照高118 75%,116 24%和63 92%,浅海沉积砖红壤上桉树单株根质量、茎质量和叶质量也较对照显著增加,但施用量高于8 03g·kg-1或低于2 76g·kg-1时会导致肥效下降。③适量施用供试物可有效防治因微量元素供应不足导致的桉树缺素垂梢病。
.Based on pot experiments and field experiments, the mechanism and effect of desnlphurization byproduct on Eucalyptus nutrition are studied. The results are as follows: (1)When applying 4.15 g·kg^(-1) desulphurization byproduct to eucalyptuses in basaltic latosol,nutrients of N, P, K, Ca, Mg,S and B absorbed by eucalyptuses are 61%, 44%, 39%, 90%,81%, 21%, 146% higher than those of controlled eucalyptuses. And the nutrients absorbed by eucalyptuses in neritic sedimentary latosol also increase greatly. It indicates that the applied byproduct can significantly improve the nutrition absorption of eucalyptuses. But when the quantity applied is over 8.03 g·kg^(-1) or below 2.76 g·kg^(-1), the eflect of eucalyptus nutrition absorption will be restrained. (2) Both pot and field experiments show that applying of suitable quantity of desulphurization byproduct can promote eucalyptus growth and increase its biomass.When applying 4.15 g·kg^(-1) desulphurization byproduct to eucalyptuses in basaltic latosol, the weights of root, stem and leaf are 118.75%, 116.24% and 63.92% higher than those of eucalyptuses under control. And the weights of root, stem and leaf of eucalyptuses in neritic sedimentary latosol also increase greatly. But when the quantity applied is over 8.03 g·kg^(-1) or below 2.76 g·kg^(-1), the effects will decline. (3) Proper use of desulphurization byproduct can prevent and cure tip-droop disease caused by the lack of trace elements.
出处
《浙江林学院学报》
CSCD
北大核心
2004年第1期15-21,共7页
Journal of Zhejiang Forestry College
基金
清华大学重点基础研究项目(985校 06 基础 6)
广东省科学技术计划项目(2003C32107)
广东省环境保护局科学技术研究项目(2001 09)
关键词
森林培育学
桉树
脱硫副产物
营养
生长
效果
.silviculture
Eucalyptus
desulphurization byproduct
nutrition
growth
effect
