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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (1): 105-111.doi: 10.11924/j.issn.1000-6850.casb2024-0058

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Effects of Bacillus aryabhattai and CaO2 on Silicon and Potassium Content of Soil in Facilities and Tomato Yield and Quality

JING Jiyue1(), WANG Zi1, GUO Xinsong1(), CUI Xiumin2(), CAO Qing3, WANG Guanghui4, ZHU Fujun1, WANG Shanshan1, DOU Yan1, YANG Chunyu1   

  1. 1 Key Laboratory of Humic Acid Fertilizer, Ministry of Agriculture and Rural Affairs/ Shandong Nongda Fertilizer Technology Co., Tai’an, Shandong 271600
    2 College of Resources and Environment, Shandong Agricultural University, Tai’an, Shandong 271018
    3 Bureau of Agriculture and Rural Development, Feicheng City, Tai’an, Shandong 271600
    4 Bureau of Agriculture and Rural Development, Rencheng District, Ji’ning, Shandong 272004
  • Received:2024-01-19 Revised:2024-07-12 Online:2025-01-05 Published:2025-01-01

Abstract:

To investigate the ability of Bacillus aryabhattai (MB) to decompose silicon and potassium, and the effects of its combination with calcium peroxide (CaO2) on tomato yield and quality, a field randomized block experimental design was used, eight treatments were set, including blank control (CK), MB 75 kg/hm2, calcium peroxide 450 kg/hm2 (Ca-30), calcium peroxide 900 kg/hm2 (Ca-60), calcium peroxide 1350 kg/hm2 (Ca-90), MB+Ca-30, MB+Ca-60, and MB+Ca-90, to quantitatively study the effects on soil effective silicon and soil rapidly available potassium content, tomato yield and quality. The results showed that MB increased the amount of rapidly available potassium in the soil. Compared with CaO2 treatment alone, all treatments of CaO2 with MB increased soil rapidly available potassium content significantly, and the best effect was achieved with the MB+Ca-60 treatment. MB application significantly increased the effective silicon content of the soil, whereas CaO2 applications decreased the effective silicon content and the combination of CaO2 and MB significantly increased the effective silicon content in all cases (P<0.05) and was higher than the CK treatment. The application of CaO2 and MB increased tomato yield, with the lowest being MB+Ca-30 treatment and the highest being MB+Ca-60. MB treatment significantly increased soluble solids, soluble sugars and vitamin C content of tomato. CaO2 application increased the content of soluble solids and soluble sugars. Compared to the control, soluble solids, soluble sugars and vitamin C content increased by 9.18%-10.80%, 13.68%-17.09%, 8.46%-8.93%, and soluble acids decreased by 5.77%-11.54% with CaO2 and MB, respectively. The combination of CaO2 and MB can significantly increase the levels of effective silicon and rapidly available potassium in the soil, improving tomato yield and fruit quality.

Key words: Bacillus aryabhattai, decompose silicon, calcium peroxide, tomato, quality, facility soil improvement