First, organic fertilizer topdressing method: organic fertilizer, including a variety of human and animal excrement, each time 100 kg per acre, fertilization 1 time 7-10 days, can be divided into small heap dumping and Quanchiposa. It is also possible to use a fertilizing method, that is, using a wooden pole as a support, using a wicker foil as a chassis, placing several shelves in a deep water area in the pool, placing the manure on the frame, and placing it on the surface of the water to make the fertilizer in the water. The upper decomposition breaks down. It is also possible to hang bags, that is, to hold the fertilizer in a rot-resistant bag and hang it on the wooden poles in the deep water area of ​​the pond so as to allow it to decompose and spread on its own. Trips and bags of fertilizers can speed up the decomposition of fertilizers and evenly spread the fertilizer to the entire fishing pond. In particular, special fertilizers can be decomposed and corrupted in the water layer of the pool. This will not cause oxygen deficiency even though the fertilizer is decomposed quickly. Let the fish float. Second, fertilizer topdressing method: fertilizer used in ponds is mainly nitrogen and phosphate fertilizers, the application ratio of 1:2. Under normal circumstances mususu urine. 2.5 kilograms, 5 kilograms of phosphate fertilizer, first use water-soluble, and then evenly spilled the whole pool, apply 5 times 7 days. Third, green manure: Green manure includes all kinds of land dry grass, drying it to half dry, and then blending a certain amount of manure, piled in the pool corner, press rock or mud, after every 3 to 5 days turn 1 times, it corrupted decomposition, the liquid gradually spread in the pool, the fall is generally 7 to 9 days to complete the solution, and then remove the roots of the rough and rotten grains, and then add new materials, each applying 100 kg of green manure. Medical Gauze,Cotton Bandage Roll,Absorbent Gauze Roll,Medical Gauze Rolls Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com