Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (2): 87-91.doi: 10.11924/j.issn.1000-6850.casb2021-0094

Special Issue: 生物技术 植物保护 油料作物

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Effects of Photosynthetic Bacteria and Biological Coating on Soil Enzyme Activities and Yield of Rape

LI Xingyue1(), YI Jun1, FU Huijuan1, LI Qiyong1, LU Wenyi1, LUO Congcong1, ZHANG Hong2()   

  1. 1Institute of Plant Protection, Sichuan Academy of Agricultural Sciences/ Key Laboratory of Integrated Pest Management on Crops in Southwest, Ministry of Agriculture, Chengdu 610066
    2Sichuan Academy of Agricultural Sciences, Chengdu 610066
  • Received:2021-01-26 Revised:2021-06-18 Online:2022-01-15 Published:2022-02-25
  • Contact: ZHANG Hong E-mail:michelle0919lee@126.com;zhh503@163.com

Abstract:

The study aims to explore the effects of biological coating on the growth of rape under the application of photosynthetic bacteria. The main rape cultivar ‘Chuanyou36’ in Sichuan Province was used as test material. Based on the field tests, this paper studied the effects of biological coating (endophytic bacillus for seed coating, and application of photosynthetic bacteria liquid before sowing), chemical coating (10% cyazofamid suspension for seed coating) and uncoated treatment on the incidence rate of clubroot, soil enzyme activities and yield traits of rape. The results showed that the incidence rate of clubroot of rape decreased significantly after the coating treatment, and was the lowest under biological coating treatment. The biological coating treatment could significantly improve the activities of catalase, sucrase, urease and acid phosphatase in soil. However, the chemical coating treatment had a certain inhibitory effect on the activities of catalase, urease and acid phosphatase. In addition, the effective branch height, plant height, rhizome thickness, number of primary effective branches, 1000-grain weight and yield of rape significantly increased under the biological coating treatment. Compared with chemical coating treatment and uncoated treatment, the yield of rape with biological coating was increased by 16.97% and 22.26%, respectively. The above results show that biological coating and the application of photosynthetic bacteria could not only improve the soil environment of rape and effectively reduce the harm of clubroot to rape, but also increase the rape yield and reduce the input of chemical agents.

Key words: biological coating, photosynthetic bacteria, rape, yield, clubroot, soil enzyme activity

CLC Number: