| Effects of different tillage measures on metabolic functional diversity of soil microbial community in surface soil of maize field |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2020.05.03 |
| Key Words: maize field topsoil tillage measures soil microorganism functional diversity carbon source metabolic activity carbon sources utilization |
| Author Name | Affiliation | | LU Sixu | College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | HE Liyan | College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Xudong | College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
Key Laboratory of Plant Nutrition and Agri\|Environment in Northwestern China, Ministry of Agriculture, Yangling, Shaanxi 712100, China |
|
| Hits: 743 |
| Download times: 443 |
| Abstract: |
| In order to study the effects of different tillage measures on soil microbial community functional diversities with straw\|return in the field, this study investigated the functional diversity of the microbial community at six different tillage measures in the maize field of Weibei dryland by using Biolog\|ECO analysis. There were six tillage patterns, including conventional tillage (C/C), no\|tillage (N/N), subsoiling tillage (S/S), no\|tillage/subsoiling tillage (N/S), conventional tillage/no\|tillage (C/N), and subsoiling tillage/conventional tillage (S/C). The results showed that the carbon metabolic activity of different tillage measures increased gradually with culturing time. Compared with C/C treatment, the AWCD values of no\|tillage and mini\|tillage increased by 12.70%~54.54%. The biodiversity indices of N/S and N/N treatments were significantly higher than those of the C/C treatment. Principal component analysis showed that the determinant carbon sources for the differences were amino acids, carbohydrates, and carboxylic acids for the first and second principal components, and these were main carbon sources for soil microbial utilization in the region. RDA analysis showed that SOC was the main factor that controlled the metabolic activity of microbial carbon. From the perspective of carbon source utilization of soil microbial community, the N/S treatment had greater microbial functional diversity, and was the most suitable measure for the local soil conditions. |
|
|
|