CATDOLL : CATDOLL: How much investment is needed to cultivate 100 acres of oysters?

1. How much investment is needed to cultivate 100 acres of oysters?

1.2 million.

According to the oyster breeding base, the cost of oyster breeding per mu is about 12,000 yuan. The investment of oyster breeding of 100 mu is about 1.2 million yuan.

Oysters have the effect of improving intelligence and brain function. The taurine, DHA and EPA contained in oysters are nutrients for intellectual development. Regular consumption of oysters can effectively improve brain function and brain function.

2. How to cultivate oysters and how to manage them?

Oysters are also known as zinc-rich foods, so they have commercial value. So how do you farm oysters? The following is a summary of oyster farming methods compiled by me. I hope you like it!

Oyster farming methods

Raft cultivation

Choose sea areas with smooth tides, abundant bait, calm winds and waves, and a water depth of more than 4m as oyster raft culture sites. Omi oysters should be cultivated near estuaries with low salinity; Dalian Bay oysters should be cultivated far from estuaries with high salinity; Pacific oysters and pleated oysters are in between. There are two main cultivation methods:

⑴ Rope culture: Suitable for oysters that use shells as a base for fixation. There are two ways to cultivate them: one is to string the shells with oyster seedlings together with ropes, separate them with bamboo tubes about 10 cm in the middle, and hang them on the raft; the other is to clamp the shells with oyster seedlings in the twisted seams of polyethylene ropes with a diameter of 3 to 3.5 cm, clamp one shell every 10 cm, and hang them on the floating raft. Generally, each rope is 2 to 3 meters long. Rubber tires can also be used to clamp seedlings for hanging culture.

(2) Cage culture: Utilize scallop cage culture. Oyster seedlings without anchorage or attached to shells are placed in scallop cages together with shells and suspended on floating ropes. Raft culture generally releases 100,000 oyster seedlings per 667 square meters, using shells as seedling collectors. About 10,000 shells can be suspended per 667 square meters. Oyster seedlings are released from May and June and harvested at the end of the year. The yield per 667 square meters can reach more than 5,000 kg.

Tidal flat aquaculture

⑴ Site selection: For tidal flat breeding, the inner bay with small waves, smooth tide and no pollution should be selected, and the bottom should be sandy muddy beach or muddy sandy beach. The tidal area should be selected at the lower part of the mid-tidal area and near the low-tidal area.

(2) Seedling planting season: Generally, mid-March to mid-April is the most suitable time for seedling planting. In terms of production, the latest time for seedling planting is mid-May.

⑶ Seeding methods: 1. Seeding at low tide: Seeding is done when the beach is dry and exposed after the tide recedes. The beach should be leveled or built into a ridge-shaped base before seeding. For seeding at low tide, try to make sure that the tide starts to rise immediately after seeding to shorten the time when the oyster seedlings are exposed to the sun and avoid seeding during noon when the sun is shining. 2. Seeding with water: Seeding by boat after the tide rises. Before seeding, divide the beach into strips, insert bamboo poles, wooden poles, etc. as signs, and scatter the oyster seedlings on the boat with a shovel after the tide rises. Seeding with water often results in uneven seeding because the distribution of oyster seedlings cannot be directly observed. The seeding density should be determined according to the quality of the beach and the fatness of the water. For excellent tidal flats, about 120,000 seedlings are sown per 6670, for medium-quality ones, about 100,000 seedlings, and for poor ones, 60,000 to 80,000 seedlings can be sown.

Oyster and shrimp polyculture

⑴ Shrimp pond selection: For shrimp ponds with mixed oyster culture, the bottom material should be mud or muddy sand, the water depth should be more than 1.3 meters, and the average daily water exchange rate should be about 50%. The transparency should be controlled at 40-50cm in the early stage and 50-60cm in the middle and late stages.

⑵ Site preparation: Before stocking the seedlings, the silt must be thoroughly cleared and the bottom of the pond where the oyster seedlings are to be planted must be leveled and compacted with a bulldozer or other tools to make it slightly convex and slightly higher than the surrounding bottom surface. This can prevent the oyster seedlings from sinking and being buried in the silt and dying.

⑶ Seeding: Under the premise of ensuring the normal shrimp stocking density, the seeding rate of oyster seedlings should be about 66703000 per 667000. The seeding time should be selected in early April, and the seedling size should be more than 2cm in shell length. The seeding stress should be uniform, and avoid the low-lying areas of the ring ditch and the feeding area. The seeding area accounts for 1/4 to 1/3 of the pond bottom area.

Stone throwing farming

The stones used as oyster seed collectors now become oyster cultivation equipment. The short-lived Crassostrea gigas can be cultivated locally at the seed collection site; the long-lived Crassostrea gigas must be moved to the cultivation site for cultivation. There are three main cultivation methods: the star-shaped method, the plum blossom method, and the determinant method:

⑴ Stars in the sky: stars scattered all over the sky are placed in a disorderly manner.

⑵ Plum blossom style: generally 5 to 6 oyster stones form a group.

⑶ Determinant: row width 0.5-1m, row spacing 0.6-1.5m. Deep water aquaculture can be done without any management after stone throwing and seedling collection until harvest.

3. What are the ways to farm oysters?

Oysters also have another name called raw oysters. Now you should be able to see vermicelli oysters, grilled oysters, etc. in some very popular snack stalls. Such snacks are really mouth-watering. Now this is one of everyone’s favorite snacks. Many people who like to eat oysters may eat 10 at a time. It is really satisfying to eat one at a time. As people’s love and demand for oysters increase, now there are more and more oyster farmers. However, if we want to cultivate oysters well, we must master the most basic management methods.

Among the breeding methods, the more common one is the pillar method, because this breeding method is relatively cheaper. Generally, cement pillars are chosen. When we make cement pillars, we must not grind them too smooth. It is okay to make them as rough as possible. You can put more stones and then make them about two meters high. In this way, oysters can be tightly attached to them. Before we put the beads into the water, we must first soak these pillars in the mud. Finally, the surface of the pillars will absorb soil and nutrients, which are all needed for life. Finally, this is the finished cement pillar, we can put it in the sea for breeding, but we must check it regularly to see if it is crooked or fallen. This pillar method is generally used for breeding on the seashore where the ocean current is very fast.

The cost of breeding is actually not high. If you have no experience, you can choose a smaller scale for the first time. Generally, the cost of one acre of land may be around 10,000 yuan. The life cycle of oysters also depends on your own breeding management methods. Some can be sold in a few months, but some may take one or two years.

There is another breeding method, which is to use ropes and some objects that can float on the water as tools, and fix the ropes and floating objects together. For the choice of floating objects, we must choose higher quality ones, so that they can be used for a longer time. In addition, we must also check them to prevent the ropes from getting tangled.

Those who are raising fish for the first time can raise a small amount, and then raise it on a large scale after gaining some experience.

You can choose to raise them together with shrimps, or raise them freely on the mudflats, or raise them in net cages, or raise them on hanging ropes, or raise them on sheds.

If you want to raise them, the best way is to buy them from professional vendors. They are usually plump and easy to raise. You also need to create a good environment yourself. There must be sufficient water resources and suitable temperature to raise them.

The main farming methods include raft farming, longline farming, trellis farming, etc. 5 to 6 months before the oysters are harvested, the cement columns in the grow-out area are moved to the muddy beach with fertile water and fast flow for fattening.