RESPONSE OVER 2 GROWING SEASONS OF A SITKA SPRUCE STAND TO N-15-UREA FERTILIZER

被引：18

作者：

HULM, SC

KILLHAM, K

机构：

[1] ICI PLC,DIV AGROCHEM,JEALOTTS HILL RES STN,BRACKNELL RG12 6EY,BERKS,ENGLAND

[2] UNIV ABERDEEN,DEPT PLANT & SOIL SCI,ABERDEEN AB9 2UE,SCOTLAND

来源：

PLANT AND SOIL | 1990年 / 124卷 / 01期

关键词：

!sup]15[!/sup]N urea fertilizer; Sitka spruce;

D O I：

10.1007/BF00010932

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Urea fertilizer labelled with 15N (2.5 atom %) was applied to a 20 year old Sitka spruce stand on a peaty gley at a rate equivalent to 160 kg N ha-1. The application of urea resulted in increased biomass and N concentration of needles and enhanced development of the crown. Differences in N concentrations of the amended trees were also observed for new wood and bark. Analysis of 15N in tree biomass showed a continued influence of fertilizer N in the second growing season following urea application. The overall recovery of fertilizer N in the trees was estimated to be about 10%. © 1990 Kluwer Academic Publishers.

引用

页码：65 / 72

页数：8

共 14 条

[1] EFFECT OF ORGANIC-MATTER ON BULK AND TRUE DENSITIES OF SOME UNCULTIVATED PODZOLIC SOILS [J].