Ecological polyculture method of river cabs, freshwater shrimps and rhodeus sinensis
A kind of technology of Chinese and scorpion, applied in fish farming, application, climate change adaptation and other directions, can solve problems such as affecting the growth of river crabs, ineffectiveness, deterioration of water quality, etc., to maintain a virtuous circle, promote growth, increase The effect of ecological structure
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Embodiment 1
[0037] A kind of ecological polyculture method of river crab, freshwater shrimp and Chinese squid, comprising the following steps:
[0038] 1. Pond Preparation
[0039] Choose a soil pond with an area of 2 mu and a water depth of 2.0 meters. The pond has sufficient water source, wide water depth, convenient irrigation and drainage, less sludge, fresh and pollution-free water, and the soil is clay.
[0040] The water inlet and outlet of the pond are arranged diagonally, and the location of the outlet is lower than the water inlet and is arranged at the bottom of the pond mouth. The construction of the beach accounts for a quarter of the pond area, with a depth of 1m and a slope ratio of 1:2.5. The remaining three sides are built with deep ditches of 1.8m.
[0041] The seedlings were sterilized with 200kg of quicklime one month before stocking. After the whole pond was sterilized in the clear pond, it was exposed to the sun until the bottom of the pond cracked. Apply enough ...
Embodiment 2
[0070] A kind of ecological polyculture method of river crab, freshwater shrimp and Chinese squid, which is basically the same as embodiment 1, except that the area of the cultured pond is 3.0 mu, the water depth is 1.6-1.8 meters, and the seedlings are sterilized with 200kg quicklime one month before stocking , Apply enough base fertilizer before the pond mouth enters the water, and apply 200kg of fermented organic fertilizer. In late March, the size of stocking crabs is about 50 / catties, complete with appendages, and healthy. The stocking density is 600 per mu; 350 fish per mu, with a male to female ratio of 1:1.1, and 250 Anodontia dorsalis for breeding; the second batch of shrimp seedlings will be stocked from the end of June after the freshwater prawns are caught and put on the market, with a size of 0.8- 1.0 cm / tail, 60,000 tails per mu; water quality control, bait feeding, disease control, daily management and harvest time are basically the same as in Example 1, and the...
Embodiment 3
[0075] A method for ecological polyculture of river crabs, freshwater shrimps, and Chinese squids, which is basically the same as in Example 1, except that young crabs with a size of about 40 / jin, complete appendages, and strong physique are stocked in late March. 800 shrimps are stocked per mu; in February, the stocking size of shrimp species is 2.0cm / tail, and the stocking density is 25 kg / mu; 350 fish per mu are stocked, and the male and female are paired according to 1:1.2, and 300 Anodon clams are stocked. It is used for the breeding of Chinese squid; after the freshwater shrimps are caught at the end of June, the second batch of shrimp seedlings will be stocked in early July. The size is 1cm / tail, and the stocking amount per mu is 50,000; And harvesting time are all substantially the same as embodiment 1, have obtained the economic benefit as table 3.
[0076] Table 3 Harvesting situation of river crab, freshwater shrimp and Chinese squid in polyculture mode
[0077] ...
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