MINERALIZATION OF NITROGEN AND CARBON IN SOILS AMENDED WITH COMPOSTED MANURE

被引：42

作者：

HEBERT, M

KARAM, A

PARENT, LE

机构：

[1] Ministère de V environnement du Québec, Direction de la recherche et des technologies environnementales, Sainte-Foy, QC, GIX 4E4

[2] Université Laval, Département des Sols, Pavilion Paul-Comtois, Sainte-Foy, QC

来源：

BIOLOGICAL AGRICULTURE & HORTICULTURE | 1991年 / 7卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1080/01448765.1991.9754565

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A study was conducted under laboratory conditions to determine the quantity of N mineralized from four composted manures incorporated into 2.7 kg of St-Jude sand or Tilly silty loam at rates of 0.05%, 0.10% and 0.20% of total N. With one exception (a hog slurry-sawdust based compost), net cumulative mineralization of N (N(m)) during successive incubation periods increased with incubation time and with the rate of addition. After four months of incubation, N(m) values varied from 0 to 14% of total added N. A significant third order interaction on N(m) values was obatained with compost type, application rate and soil type. Net immobilization of N was apparent at all incorporation rates of hog slurry compost in the two soils. To evaluate C mineralization, composts were applied at the highest N rate and CO2 production measured periodically. One to 8.2% of total added C from manure composts was mineralized after 28 days of incubation. For each compost type, C mineralization was higher with the sandy than with the loamy mixtures. With composted sheep manure and immature cow manure compost, which contained the highest amounts of potentially mineralizable C, the highest application rate to sandy soil promoted loss of N.

引用

页码：349 / 361

页数：13

共 26 条

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