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众所周知,鱼靠水来养,但“以鱼养水”试验的成功,意味着我国的常规淡水渔业的养殖模式将发生根本性转变。主持这项试验的研究员介绍说,多年来,我国淡水渔业的养殖模式普遍以追求经济效益为主,造成对江河湖泊和水库的过度利用,极易导致水体富营养化和水环境下降,如追求高产而实施的化肥养鱼直接增加了水体氮、磷含量,为提高“家鱼”成活率而过量捕捞食鱼性鱼类导致生态系统失衡等。他们从放养浮游植物食性的链鱼能直接控制蓝藻“水华”得到了启示,最终推出以生物操纵为主的生态渔业“以鱼养水”新模式。试验一年前在面积1700亩的深圳茜坑水库启动。这一模式的主要做法是首先放养一定数量的食鱼性鱼类如鳜
As we all know, fish rely on water to raise, but “fish to water” test success means that China’s conventional freshwater fisheries breeding mode will undergo a fundamental change. The researcher who presided over the experiment said that over the years, the aquaculture model of freshwater fisheries in our country has been mainly pursuing economic benefits, resulting in over-utilization of rivers, lakes and reservoirs, which can easily lead to the eutrophication of water bodies and the decline of water environment, as pursued High-yielding and implemented fertilizer and fish farming directly increase the nitrogen and phosphorus content of water body, over-fishing of fish-eating fish to increase the survival rate of “domestic fish” leads to ecosystem imbalance and the like. From the phytoplankton phytoplankton stocking can directly control the cyanobacteria “bloom” has been enlightened, and ultimately the introduction of bio-manipulation of ecological fisheries, “a water-saving” new model. A year ago, the test started in Qianqin Reservoir in Shenzhen with an area of 1,700 mu. The main approach to this model is to stock a certain amount of fish-eating fish such as catfish