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DOI：10.3969/j.issn.1004-6755.2025.07.010

Polyculture experiment of Marsupenaeus japonicus and Sparus macrocephalus *

XU Chuantang， CHEN Lingming， JIAO Wei， XIN Chongyang，WANG Junxia， MOU Dandan（Rizhao Institute of Ocean and Fisheries，Rizhao 2768oo，China）

Abstract：In response to the problem of reduced yield，caused by the high incidence of viral diseases in Marsupenaeus japonicu during the high-temperature period，a segmented co一culture experiment of Marsupenaeus japonicus and Sparus macrocephlus was carried out. By adopting a phased strategy “monoculture of shrimp in the early stage （April）， shrimp-fish polyculture in the mid一stage （May - August），and monoculture of fish in the late stage （August - October）”，to realize disease avoidance and optimal allocation of resources. Results showed that the 3335m2 experimental pond yielded a total harvest of 620kg of Marsupenaeus japonicus （average size： 32 ind. /kg ； market price：CNY 160/kg） and 750kg of Sparus macrocephlus （average size： 246. O g/ind.;market price： CNY 50/kg） . The total output value reached CNY 136 700，with a production cost of CNY 71 700 and a net profit of CNY 65 Ooo. The profit per unit area amounted to CNY 19.5/m2 ，demonstrating significant improvement over traditional monoculture practices. This study confirms that staged polyculture effectively reduces disease risks for shrimp during high一temperature periods and enhances aquaculture profitability.

Key words：Marsupenaeus japonicus ; Sparus macrocephalus ; polyculture

升顯著，現(xiàn)將技術(shù)要點總結(jié)如下。（剩余3649字）