三、化肥养鱼的主要技术措施 化肥养鱼具有投资少、设备简单、肥源广、操作简便、见效快、增产多的特点。向养殖水体施网化肥,可以通过增加水中浮游植物的生物量,改善水环境,增加鱼类的天然饵料,提高养殖鱼类的产量 一、化肥的选择 浮游植物所需的营养元素很多,其中以氮和磷显得尤为重要。选择氮肥和磷肥的一般原则一是要可溶于水,二是其水溶液呈中性、做酸性或微碱性。不溶性化肥不宜选用。 Third, the main technical measures of fish farming Fertilizer fish with less investment, simple equipment, fertilizer source wide, easy to operate, quick, yield more features. Fertilization of net fertilizers to the water body can increase the biomass of phytoplankton in the water, improve the water environment, increase the natural fish feed and increase the production of farmed fish. Fertilizer selection Phytoplankton requires many nutrients, of which Nitrogen and phosphorus are particularly important. The general principles of nitrogen and phosphate fertilizer selection First, to be soluble in water, and second, the aqueous solution was neutral, acidic or slightly alkaline. Insoluble fertilizer should not be used.