Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (23): 51-57.doi: 10.11924/j.issn.1000-6850.casb18060046

Special Issue: 水稻 农业生态

Previous Articles     Next Articles

Paddy Soil Microbial Diversity Under Tillage Practices: Research Progress

  

  • Received:2018-06-09 Revised:2019-07-17 Accepted:2018-08-24 Online:2019-08-13 Published:2019-08-13

Abstract: Soil tillage methods is an important factor affecting the soil environment and quality. Soil microorganisms are an important component of soil, and it is the most active part of nutrient conversion of soil organic matter decomposition. At present, some studies have conducted to studies the effects of different soil tillage treatments on the soil microorganisms in plough layer of paddy fields. However, the results of some research were different due to the different factors, such as soil type, climate, and field management practices. In order to understand the changes of soil microorganisms under different soil tillage treaments, the process studies on the effects of different soil tillage treatments (no-tillage, rotary tillage, plow tillage and other different tillage) on soil microorganisms were analysis in the present paper. The results showed that: (1) It was generally believed that the soil microbial biomass carbon and nitrogen contents under no-tillage treatment were higher than that of under tillage and rotary tillage treatments, and the soil microbial biomass were decreased with the increase of soil depth. (2) There were significantly differences in amount of microbes and enzyme activities with different tillage treatments, and the number of microorganisms and enzyme activities were changed with the soil depth, seasonal comdition, and the duration of cultivation, and so on. Meanwhile, the number of microorganisms with the following order bacteria> actinomycetes> fungi. (3) The soil microbial diversity with conservation tillage treatment were higher than that of tillage and rotary tillage treatments, and the soil microbial diversity were decreased with the increase of soil depth. The current research about progress of soil microorganisms under different soil tillage treatmments, the reasons for different experimental results were analyzed in the present paper. Therefore, these result were provided reference for further studying on the changes of soil microorganisms in the rhizospheric soils, improving the soil tillage and protecting ecology of double-cropping paddy fields in Southern China.