Long-term fertilization effects on soil carbon under permanent swards

被引：15
|
作者：
Bélanger, G
Richards, JE
Angers, DA
机构：
[1] Agr & Agri Food Canada, Soils & Crops Res & Dev Ctr, Ste Foy, PQ G1V 2J3, Canada
[2] Agr & Agri Food Canada, Atlantic Cool Climate Crop Res Ctr, St John, NF A1E 5Y7, Canada
来源：
CANADIAN JOURNAL OF SOIL SCIENCE | 1999年 / 79卷 / 01期
关键词：
Phleum pratense L; timothy; carbon; fertilization;
D O I：
10.4141/S98-038
中图分类号：
S15 [土壤学];
学科分类号：
0903 ; 090301 ;
摘要：
In a long-term study with four rates each of fertilizer N, P, and K in factorial combination on timothy (Phleum pratense L.), soil C concentration in the 0- to 15-cm layer of an Orthic Dystric Brunisol in New Brunswick ranged from 25 to 37 g C kg(-1) after 26 yr, and from 26 to 44 g C kg(-1) after 35 yr. Soil C concentration was not related to the wide range of aboveground net productivity resulting from contrasted long-term fertilization treatments. Soil C concentration, however, was negatively correlated to soil pH.
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页码：99 / 102
页数：4
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