鱼、虾、蟹、鳖塘的培水旨在通过培养适量的浮游动植物而使水色变得肥而亮爽,肥而活,生物饵料丰富且维持一定透明度,使得水体溶氧高,COD、BOD及氨氮、亚硝酸盐降低,而要做到这些是颇有难度的。所谓养鱼养虾先养水,把养水、培水理解为肥水是片面的,实际上肥水容易培水难。以 The cultivation of fish, shrimp, crabs and turtle ponds aims to make the water color become fat, bright and livelihood by cultivating the appropriate amount of planktons and plants, enriching biological bait and maintaining a certain degree of transparency, resulting in high dissolved oxygen, high COD, BOD and ammonia nitrogen, nitrite reduction, but to do these is quite difficult. The so-called fish shrimp feed water, the water, water training understood as fertilizer is one-sided, in fact easy to water and fertilizer water difficult. To