The fishing ponds in the fall can only be topdressed, and it is not suitable to apply base fertilizers.
Organic Fertilizer Topdressing Method: Organic fertilizers include all kinds of human and animal manure, each time 100 kg per mu, and fertilized once every 7 to 10 days, it can be divided into small heaps 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.
Fertilizer topdressing method: The fertilizer used in ponds is mainly nitrogen and phosphate fertilizers, and the application ratio is 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.
Green manure dressing method: Green manure includes all kinds of dry land grass, and it is sun dried to a half dry state, and then a certain amount of manure is mixed, piled in the pool corner and pressed with stones or mud, and then turned every 3 to 5 days. , To make it corrupt and 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.
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