Study on nitrogen and phosphorus absorption rate of dominant aquatic plants in Huma River section of spawning grounds of Oncorhynchus keta

doi:10.14088/j.cnki.issn0439-8114.2023.04.005

Abstract

Abstract: Due to environmental changes and human interference, the spawning grounds of Oncorhynchus keta in the Huma River section breeds a large number of submerged aquatic plants that are not conducive to their breeding.In order to repair the spawning grounds, from October 2018 to January 2019, through the design of indoor experiments and mathematical statistics processing, the N and P absorption rate of several dominant aquatic plants in this section of water （Chara vulgaris, Fontinalis hypnoides and Spirogyra communis） were explored. The results showed that the three plants had different optimal absorption rates of N and P in different N/P nutrient salt solutions. The purpose of this study was to provide the relevant basis and theoretical basis for the restoration of Oncorhynchus keta spawning grounds in the Huma River by exploring the growth and nutrient salt absorption mechanisms of three submerged plants.

Key words: Oncorhynchus keta, spawning grounds repair, submerged aquatic plants, nitrogen, phosphorus, absorption rate

CLC Number:

X173

LU Wan-qiao, LI Pei-lun, LIU Wei, TANG Fu-jiang, WANG Ji-long. Study on nitrogen and phosphorus absorption rate of dominant aquatic plants in Huma River section of spawning grounds of Oncorhynchus keta[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(4): 27-31.

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