基于生物经济模型的珍珠龙胆石斑鱼池塘养殖最优生产组合研究OA

As an important component of fishery resources,groupers have multiple values,among which the production of Pearl Gentian Grouper is the largest.Strengthening the research on the bioeconomic laws of the cultivation of this variety is not only conducive to the sustainable utilization of such fishery resources,but also beneficial to the construction of a large food system and the building of a powerful fishery country.Based on the household interview data in Hainan Province and combined with the existing research achievements on the biological laws of this variety,this paper establishes a bioeconomy model for the pond culture of Pearl Gentian Grouper with different fry stocking periods and a cultivation cycle of 20 months,aiming to reveal the production combination of the optimal fry stocking period and the optimal cultivation cycle as well as its influencing factors.The results show that:(1)The optimal fry stocking period for cultivation production is October every year,and harvesting after 18 months of cultivation after fry stocking can maximize the profits of aquaculture producers,forming an optimal production combination;(2)Under the optimal production combination,the safety margin ratio of cultivation production is the highest.At this time,the feed cost accounts for the largest proportion in the total unit cultivation cost,followed by the labor cost,fish medicine cost and fry cost;(3)Under the optimal production combination,in aquaculture production,profit is most sensitive to changes in sales prices,followed by changes in total costs.Suggestions for maximizing the profit of breeding production are put forward at the end of the paper.