磷是藻类必需的营养元素,养鱼水体中缺磷现象往往比缺氮更普遍,更严重,尤其是黄壤、红壤土质的水体。因此,这些水体施磷能迅速促进饵料生物的大量繁殖,提高鱼产量。但养鱼施磷必须做到九看,才能收到良好的效果。一看目的。施肥目的不同,选用磷肥品种不同。若施磷肥的目的是作追 Phosphorus is an essential nutrient for algae. Phosphorus deficiency in fish culture is more common and serious than nitrogen deficiency, especially in yellow soil and red soil. Therefore, phosphorus in these water bodies can rapidly promote the large-scale breeding of food organisms and increase fish production. However, phosphorus must be nine fish in order to receive good results. Look at the purpose. Different purposes of fertilization, the choice of different types of phosphate fertilizer. If the purpose of phosphate fertilizer is to chase