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.

引用

收藏

页码：99 / 102

页数：4

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