Effects of rice-red claw crayfish co-culture on soil nutrients and carbon pool in reclaimed paddy fields

doi:10.16178/j.issn.0528-9017.20240427

Abstract

Abstract:

This study investigated the impacts of the rice-red claw crayfish (Cherax quadricarinatus) co-culture system on soil fertility and carbon pool in reclaimed paddy fields. The experiment included a control group (rice monoculture) and an experimental group (rice-crayfish co-culture). Results showed that during the jointing stage, the experimental group exhibited significantly higher soil organic matter, total nitrogen, available phosphorus, available potassium, and organic carbon content compared with the control group. At the rice maturity stage, soil organic matter and organic carbon content in the experimental group also increased significantly. However, the co-culture system had no significant effect on soil pH value. In conclusion, the rice-red claw crayfish co-culture system significantly improved soil fertility during both the jointing and maturity stages in reclaimed paddy fields, contributing to the stabilization of the carbon pool.

Key words: rice-red claw crayfish co-culture, reclaimed paddy fields, soil, nutrients, carbon pool

CLC Number:

S964.2

XU Lingwei, XU Jinqing, JIANG Jing, LIU Xiao, CHEN Fan, GUO Shuirong, LIANG Xiao, TANG Jinyu, HUANG Fuyong, LOU Bao, ZHANG Yu. Effects of rice-red claw crayfish co-culture on soil nutrients and carbon pool in reclaimed paddy fields[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(8): 1824-1828.

Figures/Tables 6

Fig.1 pH value of paddy field in different periods

Fig.2 Organic matter content of paddy field indifferent periods

Fig.3 Nitrogen content of paddy field in different periods

Fig.4 Phosphorus content of paddy field in different periods

Fig.5 Potassium content of paddy field in different periods

Fig.6 Carbon content of paddy soil in different periods

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