Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (3): 589-599.DOI: 10.3969/j.issn.1004-1524.20221790

• Environmental Science • Previous Articles     Next Articles

Effects of microbial fertilizer instead of partial chemical fertilizer on yield, quality and soil microorganisms of cauliflower

HOU Dong1(), LI Yali1, YUE Hongzhong1, ZHANG Dongqin1, YAO Tuo2, HUANG Shuchao3, YANG Haixing4   

  1. 1. Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
    2. Key Laboratory of Grassland Ecosystem, Ministry of Education, Pratacultural College, Gansu Agricultural University, Lanzhou 730070, China
    3. College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
    4. Agricultural Technology Extension Center of Yuzhong County, Gansu Province, Yuzhong 730070, Gansu, China
  • Received:2022-12-13 Online:2024-03-25 Published:2024-04-09

Abstract:

In Yuzhong County, Lanzhou City, Gansu Province, China, a 3-year consecutive experiment was carried out from 2018 to 2020 to monitor the impact of replacing chemical fertilizers with microbial fertilizer on the yield, quality and soil environment of cauliflower. There were three treatments: A, full amount of chemical fertilizer (commonly used amount in local, 100% chemical fertilizer); B: microbial fertilizer (60 kg·hm-2)+60% amount of chemical fertilizer commonly used in local; C, microbial fertilizer (120 kg·hm-2)+40% amount of chemical fertilizer commonly used in local. The results showed that compared with treatment A, the yield of cauliflower under treatment B was 32.41, 33.61 t·hm-2 in 2018, 2020, respectively, which was significantly (P<0.05) higher than that under treatment A by 7.7% and 2.1%, respectively. But, in 2019, the yield of cauliflower under treatment A was significanly higher than that under other treatments. Compared with treatment A, the vitamin C content under treatment B and treatment C in 2019 was significantly higher by 72.2% and 94.3%, respectively, and the nitrate content of cauliflower under treatment B was significantly decreased by 7.0%. After the test for 3 years, the soil sucrase activity and available phosphorus content under treatments of B and C were significantly increased thant those under treatment A, while the soil available potassiumn content under treatment C was decreased significantly, yet the soil total phosphorus content was significantly increased. Compared with the treatment of full amount of chemical fertilizer, the relative abundance of soil beneficial microorganisms, such as Planctomycetota, Actinobacteria, Firmicutes, Mortierella, was increased, and the relative abundance of pathogenic bacteria, such as Olpidium and Spizellomyces, was decreased by 2.98%-42.97% and 80.69%-85.31%, respectively. In summary, application of appropriate amount of microbial fertilizer in place of chemical fertilizers could improve soil quality, balance microflora, and improve the quality of cauliflower in plateau planting areas. Under test conditions of this test, treatment B showed the best effect.

Key words: cauliflower, microbial fertilizer, soil microorganisms, soil physiochemical property

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