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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (5): 1443-1450.doi: 10.13287/j.1001-9332.202005.028

• Special Features of Soil Ecology and Health • Previous Articles     Next Articles

Effects of residual apple fermentation products on continuous cropping soil environment and the growth of Malus hupehensis Rehd. Seedlings

DU Wen-yan1, WANG Mei1, YAN Zhu-bing1, WANG Jian-feng2, CHEN Xue-sen1, SHEN Xiang1, YIN Cheng-miao1, MAO Zhi-quan1*   

  1. 1College of Horticulture Science and Engineering, Shandong Agricultural University/State Key Laboratory of Crop Biology, Tai’an 271018, Shandong, China;
    2Xintai City Zhai Town Comprehensive Agricultural Service Center, Tai’an 271204, Shandong, China
  • Received:2020-02-17 Online:2020-05-15 Published:2020-05-15
  • Contact: * E-mail: mzhiquan@sdau.edu.cn
  • Supported by:
    This work was supported by the National Key R&D Program of China (2016YFD0201114), the Special Foundation for Construction of Modern Agricultural Industrial Technology System (CARS-27), the National Natural Science Foundation of China (31672104), the Science and Technology Support Plan for Youth Innovation of Colleges and Universities in Shandong Province (2019KJF020), the Shandong Fruit Innovation Team Program (SDAIT-06-07), and the Foundation of Taishan Scholar (ts20190923).

Abstract: Effects of fermented apple products on the growth of continuous cropping Malus hupehensis Rehd. seedlings and soil environment were examined in a pot experiment to provide theoretical basis for apple replant disease. There were four treatments, the replanted soil (control, CK), sterilized replant soil (T1), replanted soil applied with apple fermentation products (T2), and replanted soil applied with sterilized apple fermentation products (T3). The results showed that T1, T2 and T3 significantly promoted seedlings growth, with better performance of T1 and T2. T1 increased root respiration rate, plant height, ground diameter, fresh weight, and dry weight by 107.3%, 50.6%, 42.4%, 171.7%, 225.3%, while T3 increased them by 104.4%, 50.6%, 42.3%, 171.8%, 225.5%, respectively over CK. T2 and T3 increased the activities of nutrient conversion-related enzymes in continuous cropping soil. T2 increased the activities of catalase, urease, neutral phosphatase and sucrase by 44.5%, 169.5%, 23.4%, 169.3%, while T3 increased them by 23.7%, 72.6%, 1.5%, 121.5%, respectively. Catalase and sucrase activities under T1 treatment did not differ from that in CK, whereas their urease and neutral phosphatase activities were reduced by 40.8% and 41.6%, respectively. The contents of ammonium, nitrate, available phosphorus and available potassium in T2 soil were increased by 18.6%, 50.6%, 14.0% and 36.7% respectively. T3 only increased the content of available nitrogen, with ammonium and nitrate being increased by 7.0% and 23.6% respectively. The content of available nutrients of T1 decreased compared with CK. T1 and T2 significantly reduced the abundance of actinomycetes and fungi in soil and increased that of bacteria. The abundance of bacteria, actinomycetes and fungi in T3 treatment were all significantly decreased. Results of real-time fluorescence quantitative PCR analysis showed that the gene copies of Fusarium proliferaturn, F. moniliforme, F. solani and F. oxysporum in T1, T2 and T3 were ecreased to different degrees. Apple fermented product could inhibit soil pathogen in replanted orchard soil, improve soil environment, and promote seedling growth, which could be used to alleviate the apple replant disease.

Key words: apple replant disease, residual apple fermentation product, soil nutrient, soil microorganism