ORIGINAL RESEARCH
Impact of Different Modes of Comprehensive
Rice Field Planting and Aquaculture
Systems in Paddy Fields on Rice Yield,
Quality, and Economic Benefits
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Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
Submission date: 2024-02-03
Final revision date: 2024-04-08
Acceptance date: 2024-04-13
Online publication date: 2024-05-31
Corresponding author
Zhiqiang Li
Institute of Plant Protection, Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
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ABSTRACT
In order to elucidate the characteristics and variations in rice yield, quality, and economic benefits
under different modes of comprehensive rice field planting and aquaculture systems. This study
investigated three modes: rice-shrimp (RL), rice-fish (RF), and rice-duck (RC). These were compared
with the rice monoculture mode (CK). Results indicate that, compared to CK, three modes significantly
increased rice yield. A higher accumulation of dry matter during the main growth stages, a larger
LAI, and elevated photosynthetic potential, population growth rate, and net assimilation rate during
crucial growth phases. The three modes significantly increased the rice milling yield compared to CK.
They increased the content of amylose by 0.90% to 1.29% and improved the protein content by 0.03% to
0.78%. RC demonstrated a more pronounced effect on enhancing the taste quality of rice. Economically,
the three modes exhibited a notable increase in economic benefits, ranging from 153.06% to 431.40%
compared to CK. This improvement in economic returns was primarily attributed to increased
income from aquatic product farming and premium pricing for high-quality rice. In conclusion,
the comprehensive rice field planting and aquaculture system represents a stable, quality-enhancing,
and efficient rice production method.