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Journal of Desert Research ›› 2021, Vol. 41 ›› Issue (5): 157-165.DOI: 10.7522/j.issn.1000-694X.2021.00059

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Effects of silicon fertilizer and microbial inoculants on the growth and soil biochemical properties of continuous cropping in Lanzhou lily

Yanlin Yu1(), Guiying Shi1(), Lipeng Zhang1, Guihong Shi1, Mouqiang Li2, Guoli Su1, Xiaoxiao Li1   

  1. 1.College of Horticulture,Gansu Agricultural University,Lanzhou 730070,China
    2.Agricultural Technology Extension Station of Longmen Town,Lintao 730500,Gansu,China
  • Received:2021-02-02 Revised:2021-04-27 Online:2021-09-20 Published:2021-09-23
  • Contact: Guiying Shi

Abstract:

The continuous acting obstacle of Lilium davidli var. unicolor has become a constraint factor for its industrial development. In order to explore ways to alleviate the continuous acting obstacle. This study set four treatments: CK (control), SF (silicon fertilizer), MF (microbial agents), SMF (silicon fertilizer + microbial agents), through the determination of plant growth index, the number of soil culturable microorganisms and physical and chemical indicators, and using membership function and redundancy analysis (RDA) method, analyzed the effects of treatments on lily growth and soil biochemical properties.The results indicate that: (1) Compared with CK treatment, SF, MF and SMF treatment all improved the plant growth index and enhanced the root activity of Lanzhou Lily. (2) Compared with CK, the microbial community structure treated by SF, MF and SMF changed significantly, the number of bacteria increased significantly, the number of fungi decreased significantly, and the soil changed from fungal type to bacterial type. (3) Membership function analysis shows that SMF has the best effect, MF, SF has the second best effect and CK has the worst effect. (4) RDA analysis shows that soil urease, alkaline phosphatase and sucrase were positively correlated with organic matter, available silicon content and available potassium, but negatively correlated with pH. The soil nutrients treated by SMF were the best and the effect was the most significant. In conclusion,single and combined application of silicon fertilizer and microbial fertilizer could significantly promote the plant growth of lanzhou lily, improve the soil microbial community structure, increase the soil nutrient content, and thus alleviate the continuous cropping obstacles of Lanzhou lily, and the combination of silicon fertilizer and microbial fertilizer had the best effect.

Key words: Lanzhou lily, continuous cropping obstacles, silicon fertilizer, microbial inoculants, soil nutrient

CLC Number: