饲料已成为当前发展养鱼生产的主要限制因素。要继续高速度发展养鱼生产,就必须同步发展鱼饲料生产,广辟饲源,对养鱼和生产饲料的土地和水面进行合理布局。道理很简单,种植业是养殖业的基础,没有种植业就没有养殖业。我们在研究个别水域生产时都很重视初级生产力,但对整体生产的安排却往往忽视了。这是很危险的。另外,我们还应了解种植业一般只能平面利用土地,而养殖业则可以立体利用。因此,从节 Feed has become a major limiting factor in the current development of fish farming. To continue the high-speed development of fish farming, it is necessary to develop the production of fish feed simultaneously, widen the sources of feed, and rationally allocate the land and water for raising fish and producing feed. The reason is very simple, farming is the basis of aquaculture, there is no farming without aquaculture. When we are studying the production of individual waters, we attach importance to primary productivity. However, the overall production arrangements are often overlooked. This is very dangerous. In addition, we should also understand that the planting industry generally only uses the land in a flat manner, while the aquaculture industry can use it in a three-dimensional manner. So from the section