MICROBIAL BIOMASS AND ORGANIC-MATTER TURNOVER IN WETLAND RICE SOILS

被引：32

作者：

GAUNT, JL

NEUE, HU

CASSMAN, KG

OLK, DC

ARAH, JRM

WITT, C

OTTOW, JCG

GRANT, IF

机构：

[1] NAT RESOURCES INST, CHATHAM ME4 4TB, KENT, ENGLAND

[2] INT RICE RES INST, MANILA 1099, PHILIPPINES

[3] SCOTTISH AGR COLL, EDINBURGH EH9 3JG, SCOTLAND

[4] JUSTUS LIEBIG UNIV, INST ANGEW MIKROBIOL, D-35390 GIESSEN, GERMANY

来源：

BIOLOGY AND FERTILITY OF SOILS | 1995年 / 19卷 / 04期

关键词：

MINERALIZATION; IMMOBILIZATION; HUMIFICATION; MICROBIAL BIOMASS; ORYZA-SATIVA L; INTENSIVE PRODUCTION; CONTINUOUS FLOODING; YIELD DECLINE;

D O I：

10.1007/BF00336104

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

A decline in rice yields has been associated with intensification of rice production. In continuously irrigated systems this has been attributed to a decline in soil N supply. Nutrient mineralisation and immobilisation is constrained by the quantity and nature of the organic substrates and the physico-chemical environment of the soil system itself. A flooded soil is very different from an aerobic one; electron acceptors other than oxygen have to be used. The transition to continuously anaerobic conditions associated with the intensification of wetland rice systems affects their organic matter turnover and may adversely affect their productivity.

引用

页码：333 / 342

页数：10

共 75 条

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