了解水域中不同水层浮游生物的种类组成和数量变动是生物海洋学基础调查观测项目之一,它通常采用一种能控制浮游生物网张开、关闭的装置——闭锁器进行分层采样。鉴于我国通常使用的闭锁器,往往发生未击使锤就自动关闭,或下击使锤网未能关闭等毛病而造成失误或须重新采集,从而拖长采集时间。为了解决上述弊病,我们参考前人所 Understanding the species composition and abundance of plankton in different aquifers is one of the most important bio-oceanographic survey projects. It usually stratifies samples by using a device that can control the opening and closing of the plankton net. In view of the commonly used stopper in our country, it often happens that the hammer is not shut down automatically, or the hammer can not be shut down so that the hammer can cause mistakes or need to be collected again, thus prolonging the collection time. In order to solve the above shortcomings, we refer to the predecessors