THE EFFECT OF MOISTURE ON THE DECOMPOSITION RATE OF CATTLE MANURE

被引:89
作者
MURWIRA, HK [1 ]
KIRCHMANN, H [1 ]
SWIFT, MJ [1 ]
机构
[1] SWEDISH UNIV AGR SCI,DEPT SOIL SCI,S-75007 UPPSALA,SWEDEN
关键词
CO [!sub]2[!/sub]-C evolution; incubation; non-linear regression models;
D O I
10.1007/BF02851975
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
In an incubation study the effect of moisture content on CO 2-C production from manure at 25°C was determined. Different non-linear regression models were applied to describe cumulative CO 2-C evolution and a simple first-order model gave the best curve fit. Derived data from the curve fitting procedure were plotted against moisture content. A linear relationship between moisture content and microbial activity up to 50% of the water-holding capacity was followed by a curvilinear response between 50% of WHC and saturation. Equations describing the effect of moisture on dry matter decomposition are given. © 1990 Kluwer Academic Publishers.
引用
收藏
页码:197 / 199
页数:3
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