The special organic bio-fertilizers for Penaeus vannamei are jointly developed by Zhejiang Zhefeng Chemical Fertilizer Trace Elements Co., Ltd., Zhejiang University and Zhejiang Academy of Agricultural Sciences. The product is made of high-quality chicken manure, cow dung, rapeseed cake, fish meal and other raw material fermentation processing, can quickly fertilize water quality, adjust the pH of the pool water, improve the water environment, before the release of Penaeus vannamei juvenile shrimp breeding and breeding process And regulate the quality of water quality organic fertilizer. The organic fertilizer is only suitable for freshwater farming.
Usage: (1) Before releasing the seedlings, apply 20 to 40 kilograms of shrimp ponds with a depth of 1 meter per acre of water to fertilize the water body. (2) Apply topdressing usually to keep the transparency of the pool water at 30 to 40 cm. The amount of fertilizer applied per mu is about 10 kg per mu. (3) The frequency of applying topdressing depends on the temperature, water quality, and fertility and transparency of shrimp ponds. It is usually applied 5 to 7 days. (4) The time for topdressing is suitable for sunny mornings. Dissolve in appropriate amount of water first, and then sprinkling it in the shrimp pond. At the same time, turn on the aerator.
Usage: (1) Before releasing the seedlings, apply 20 to 40 kilograms of shrimp ponds with a depth of 1 meter per acre of water to fertilize the water body. (2) Apply topdressing usually to keep the transparency of the pool water at 30 to 40 cm. The amount of fertilizer applied per mu is about 10 kg per mu. (3) The frequency of applying topdressing depends on the temperature, water quality, and fertility and transparency of shrimp ponds. It is usually applied 5 to 7 days. (4) The time for topdressing is suitable for sunny mornings. Dissolve in appropriate amount of water first, and then sprinkling it in the shrimp pond. At the same time, turn on the aerator.
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