目前用于池塘养鱼生产的渔业机械都是以单机为主要形式。农村实行生产承包责任制以来,养鱼以专业户、重点户为主。生产规模小,要配齐各种养鱼机械比较困难。因此养鱼农户急需生产一机多用.利用率高的机具,用较少的投资,达到增产增收的目的。为了解决这个难题,山东省淡水水产研究所研制成 L-12型池塘联合投喂施肥机即池塘养鱼多用车。该 Currently used for the production of fish ponds fishing machinery are mainly stand-alone form. Since the implementation of the responsibility system for production contracting in rural areas, fish farming has been dominated by specialized households and key households. Small scale of production, to be equipped with a variety of fish farming machinery more difficult. Therefore, fish farmers are in urgent need of production of a multi-purpose machine with high utilization of equipment, with less investment to achieve the purpose of increasing production and income. In order to solve this problem, Shandong Institute of Freshwater Fisheries developed L-12-type ponds combined feeding fertilizer that is pond fish multi-purpose car. This