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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (22): 72-80.doi: 10.11924/j.issn.1000-6850.casb2023-0632

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Artificial Cultivation and Regulation of Duckweed and Its Role in Rice Field Ecosystem

ZHAO Yipeng1(), ZHAO Xinyong1, HU Tingting1, LUO Jingsheng2, WANG Yunxia()   

  1. 1 Xuzhou Institute of Agricultural Sciences, Xuzhou, Jiangsu 221000
    2 College of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu 225009
  • Received:2023-09-05 Revised:2024-04-20 Online:2024-07-28 Published:2024-07-28

Abstract:

This paper presents the physiological and ecological characteristics of duckweed, its occurrence and distribution patterns, as well as the reproduction modes in its natural habitats. Based on these characteristics, the latest research and exploration on the preparation of duckweed in the laboratory and the large-scale cultivation methods of culture ponds were further summarized. The environmental factors affecting the growth of duckweed were systematically reviewed, with particular emphasis on the role of duckweed in the conversion and utilization of ammonia nitrogen in rice fields. Further research is needed on the dynamic changes of duckweed in rice fields and its interaction with rice in the field of agricultural ecology. While reducing the risk of rice yield decline caused by the rapid growth of duckweed, the balance effect of duckweed in rice field ecosystems should be fully utilized to enhance the diversity and stability of rice field ecosystems.

Key words: duckweed, distribution pattern, reproduction and cultivation, agroecosystem, rice, interaction effect, physiological and ecological characteristics, large-scale cultivation, environmental factors, ammonium nitrogen transformation