现代的高投入、高产出、高效益养鱼方式在我国及很多国家中迅速发展。但有机物负荷过大时常造成水质恶化，鱼病泛滥等现象，使矛盾向反方向转化，初级生产力剧降，轻则减缓鱼类的生长，降低产量，重则造成养殖鱼类的死亡，甚至造成泛池。这使人们感觉到集约化养鱼的迅速发展是? The modern high input, high yield, high efficiency fish farming in our country and many countries in the rapid development. However, when the load of organics is too large, the quality of the water often deteriorates and fish diseases proliferate. Contradictions are transformed in the opposite direction. The primary productivity drops drastically, reducing the growth of fish and reducing the output, resulting in the death of farmed fish and even causing Pan pool. This makes people feel the rapid development of intensive fish farming is?