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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (19): 102-108.doi: 10.11924/j.issn.1000-6850.casb2023-0616

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Effects of Organic Fertilizer from Aquaculture Solid Waste on Soil Fertility and Vegetable Quality

DING Lan1(), XU Shengnan1, ZHOU Dan2, LIU Mei2(), LI Wanqi2, ZOU Songbao2   

  1. 1 Aquaculture Management Section, Anji County Agricultural and Rural Bureau, Anji, Zhejiang 313300
    2 Key Laboratory of Healthy Freshwater Aquaculture, Ministry of Agriculture and Rural Affairs/ Key Laboratory of Freshwater Aquatic Genetics and Breeding of Zhejiang Province/ Zhejiang Institute of Freshwater Fisheries, Huzhou, Zhejiang 313001
  • Received:2023-08-23 Revised:2024-03-18 Online:2024-07-05 Published:2024-07-02

Abstract:

To explore the effects of organic fertilizer derived from aquaculture solid waste on soil fertility and vegetable quality, two control and four treatment groups were established for the field experiment in this study, including control group CK1 (no fertilizer + pepper), control group CK2 (no fertilizer + tomato), treatment group T1 (fish manure organic fertilizer + pepper), treatment group T2 (chicken manure organic fertilizer + pepper), treatment group T3 (fish manure organic fertilizer + tomato), and treatment group T4 (chicken manure organic fertilizer + tomato). The effects of fish manure organic fertilizer on soil fertility, growth and the quality of pepper and tomato plants were investigated. The results showed that compared with the control group, fish manure organic fertilizer significantly improved the level of beneficial soil microorganisms. Fish manure organic fertilizer was also demonstrated to improve soil quality indicators such as total soil organic matter, total nitrogen, total phosphorus, and soil porosity, which led to increase soil fertility, superior soil composition, and better growth of pepper and tomato plants. In addition, the vitamin C content of the vegetables in the fish manure treatment group increased by 11.9%-24.0% on average, and the soluble sugar content increased by 8.1%-16.7%, which represented significant improvement in the quality and nutritional value of the vegetables. However, commercially available chicken manure organic fertilizer still performed better than fish manure organic fertilizer in several metrics. Future research should aim to further improve the nutrient ratios in fish manure organic fertilizer, especially to increase the fast-acting potassium content.

Key words: aquaculture pond, solid waste, aquaculture solid waste, organic fertilizer, soil fertility, soil fertility, vegetable quality, fish manure, chicken manure, field trial