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- Title
木霉生物有机肥对白菜和甘蓝产量及土壤微生物区系的影响.
- Authors
刘正洋; 王若斐; 乔策策; 张楠; 沈宗专; 李荣; 沈其荣
- Abstract
[Objectives]The effects of organic fertilizer(OF)and bio-organic fertilizer(BIO)on yield and microflora in Chinese cabbage and cabbage rotation system were compared to reveal the soil micro-ecological mechanisms of yield enhancement, and to further provide an important theoretical basis for high-yield cultivation of cabbages. [ Methods] A 2-season field experiment was performed to investigate the impacts of continuous application of OF and BIO on Chinese cabbage and cabbage yields, and the high-throughput sequencing was employed to analyze the variation of soil microflora in different seasons. [Results]Two seasons continuous applications of BIO effectively increased the crop yields by 4.25% and 8.85% respectively, as compared to the treatment applied with OF. In addi- tion, application of BIO significantly increased the EC value, available potassium and available phosphorus contents. Except for the rich- ness index of bacterial community in the second season, the richness and diversity indexes of microbial community in BIO were higher than those in OF. Principal coordinates analysis results showed that microflora structures were significantly separated by different fertili- zation regimes. Variation partition analysis results showed that the functional microorganisms(Trichoderma guizhouense NJAU4742)had a significant impact on the variation of microflora structure, especially for fungal community. The relative abundances of Burkholderia, Bhargavaea, Trichoderma and Rhodotorula in BIO were significantly higher than those in OF, and showed positive correlations with crop yields. The results of redundancy analysis were the same with principal coordinates analysis. The relative abundances of Burkholderia, Bhargavaea, Trichoderma and Rhodotorula had positive correlations with the cabbage yield. [Conclusions]Consecutive BIO application increased crop yields in Chinese cabbage and cabbage rotation system, and altered soil microbial community structure and composition. The yield enhancement was attributed to the amendment of BIO which enhanced relative abundance of Trichoderma and increased the abundance of native beneficial microbial groups including Burkholderia, Bhargavaea, and Rhodotorula genera. Consecutive BIO application can manipulate the soil microbial community structure and composition, and increase crop yields in Chinese cabbage and cabbage rotation system.
- Subjects
CHINESE cabbage; CROP yields; MICROBIAL diversity; BACTERIAL communities; MICROBIAL communities; CABBAGE; ORGANIC fertilizers
- Publication
Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao, 2020, Vol 43, Issue 3, p650
- ISSN
1000-2030
- Publication type
Article
- DOI
10.7685/jnau.201908023