Effect of tillage system on soil animal,microorganism and enzyme activity in paddy field

Abstract

Abstract: A long-term experiment showed that under ridge-no-tillage,the amount of soil animal in 0～20 cm layer was 14 700 ind.·m^-2,while under no-tillage and fallow in winter,paddy-upland rotation,and conventional tillage,it was 10 450,7 950 and 6 275 ind.·m^-2,respectively.Soil microbial biomass and microbial biomass N were more in spring and autumn,and less in summer.Soil enzyme activity was higher in surface soil layer and lower in bottom soil layer.The amount of soil animal,microbial biomass and microbial biomass N and soil enzyme activity was in order of ridge-no-tillage>paddy-upland rotation>no-tillage and fallow in winter>conventional tillage.The results also indicated that ridge-no-tillage was advantageous to improve soil ecological environment and soil fertility in paddy field.

Key words: Tillage system, Paddy field, Ridge-no-tillage, Soil animal, Soil microorganism, Soil enzyme activity

CLC Number:

S714

GAO Ming, ZHOU Baotong, WEI Chaofu, XIE Deti, ZHANG Lei. Effect of tillage system on soil animal,microorganism and enzyme activity in paddy field[J]. Chinese Journal of Applied Ecology, 2004, (7): 1177-1181.

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