Effects of intercropping patterns on soil nutrients and microbial community in young jackfruit orchard
In order to investigate the effects of different intercropping patterns on soil nutrients and soil microorganisms in young jackfruit orchard,rhizosphere soil samples were selected under four planting patterns:single jackfruit,jackfruit intercropping pumpkin,intercropping pinto peanut,and intercropping horse gram.Soil nutrients and rhizosphere microbial communities were measured in 16S rRNA V4-V5 region,and compared with the basal soil in the pre-intercropping test area.The results showed that the contents of soil organic carbon,total nitrogen,available nitrogen,total phosphorus and total potassium in the three intercropping patterns were significantly increased compared with that before intercropping,and the contents of total nitrogen,available nitrogen and total potassium in the three intercropping modes were significantly increased compared with that of single cropping mode.The soil pH value was higher than that of single cropping mode,and the best effect was obtained by intercropping with horse gram.The dominant bacterial groups in the four cultivation inodes are Acidobacteria,Proteobacteria,Actinobacteria and Chloroflexi,etc.Intercropping patterns increased the relative abundance of Rhizomicrobium,but decreased the relative abundance of Acidobacteria,Actinobacteria and Chloroflexi.Acidobacteria had significant positive correlation with available phosphorus,and Actinobacteria had significant or negative correlation with available nitrogen,total potassium and total nitrogen.The height growth of young jackfruit intercropping plant was as follows:jackfruit intercropping horse gram＞jackfruit intercropping pumpkin＞jackfruit intercropping pinto peanut＞single jackfruit.
jackfruitintercropping patternssoil nutrientssoil microbial community
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