What aquatic plants are good for crab farming? What is the best aquatic plant to feed crabs

The main varieties of crab crayfish aquaculture aquatic weeds are melanophyllum rotinalis, bitter grass, elophylla, etc., melanophyllum rotiflora and Elosophyllum are mainly transplanted and cutting, and bitter grass is planted by sowing. These are.

Crab crayfish like aquatic plants.

Crab ponds are planted with Elo algae, and the Elo algae net in Sihong County, Jiangsu Province, specializes in selling Elo algae, which can purify water quality and prevent eutrophication of water bodies. Elophylla can not only release a large amount of oxygen in the process of photosynthesis, but also absorb a large amount of harmful ammonia nitrogen, carbon dioxide and remaining bait dissolved substances and some organic decomposition substances continuously produced in the water, which is of great significance for stabilizing the pH value, keeping the water quality neutral and alkaline, increasing the transparency of the water body, promoting molting, improving feed utilization, and improving quality.

Crab breeding with aquatic weeds is not a kind of Elophylla, as well as withered grass, water peanuts, black algae rotifolia, etc., because the growth period of various aquatic weeds is different, there are various aquatic weeds in the water position is different, we must be familiar with the growth cycle of various aquatic weeds, to ensure that we breed aquatic weeds in the mouth of the pond continuously, and do not exceed two-thirds as well, at present, there is a company in Sihong County, Jiangsu Province is specialized in cultivating aquatic weeds, their ** is Elo algae net, you can search it, to see their technical information, There will be a great reward.

For different crabs, the required nutrient leakage and sensitivity conditions are different, so the edible aquatic plants are different, among which the better aquatic plants are the following:

1. Elophylla: Elophyllum is a high-quality, fast-growing, high-yielding submerged plant native to the Americas. It is rich in nutrients, can purify water quality, prevent eutrophication of water bodies, and help to create a good water quality environment.

2. Goldfish algae: goldfish algae, perennial herbaceous submerged aquatic plants, alias fine grass, soft grass, fish grass, goldfish algae grow in the still water of small lakes for many years, once common in ponds, ditches and other places, can be used as pigs, fish, crab search and poultry feed.

3. Shuiyun grass: Shuiyun grass is a perennial herbaceous submerged plant, which has become a common weed in ponds and rivers in Asia, which is cheap and rich in nutrients, and is suitable for crab farming.

1. Black algae: Black algae likes high temperature, good adaptability, long growth period, strong regeneration, river crabs like to eat, and is suitable for planting in crab ponds and large water surfaces with sufficient sunlight. The black algae has strong vitality, and after being cut off by river crabs, the broken joints can take root on their own, so they will not cause water quality deterioration.

2. Elophylla: Elophyllum germinates early and grows quickly, especially when other aquatic plants have not yet grown in the pre-Wufan period, only Elophylla can provide an ideal place for the growth, habitat, molting and avoidance of enemies of river crabs. However, Elophylla is not resistant to high temperatures and grows densely.

When the water temperature reaches 30, the growth is basically over, the water is easy to smell, and the planting area is controlled within 20, which is generally planted as a transitional aquatic weed.

3. Goldfish algae: Goldfish algae is resistant to high temperature, crabs like to eat, and has strong regeneration, with obvious advantages, and the disadvantage is that Wangfa is easy to cause smelly water. Therefore, goldfish algae is more suitable for cultivation in large water surfaces.

When goldfish algae flourishes, it should be artificially thinned to avoid the phenomenon of dead grass and smelly water that affects photosynthesis after it is too dense.

4. Bitter grass: Bitter grass has the advantages of crabs like to eat, no smelly water, and high temperature resistance, but the disadvantage is that it is easy to be destroyed. Especially in the summer high temperature season, if you don't pay attention to protection, the loss will be very heavy.

Some crab ponds dominated by bitter grass have a high temperature period of less than a week, and crab farmers have no time to catch grass, and all the bitter grass is caught by crabs. According to estimates, the crab pond with bitter grass as the main source is 70-120 yuan per mu. If the grass is not harvested in time, the water quality will deteriorate, and even stink, and the stinky green sha will appear", causing a large number of river crabs to die, so it is necessary to catch grass in time to avoid losses when feeding.

The success or failure of river crab breeding is closely related to the quality of aquatic plants, the fishing proverb has "crab size, look at aquatic plants", aquatic plants are the natural bait of river crabs, where aquatic plants are abundant, all kinds of plankton, aquatic insects, small fish and shrimp, shellfish are more numerous, and bring palatable animal bait to river crabs. Aquatic plants can provide excellent habitat, molting and hiding places for river crabs, and the photosynthesis of aquatic plants can increase dissolved oxygen in water, and can also absorb ammonia nitrogen and inorganic nutrients in water, increase the transparency of water bodies, and keep the water bodies alkaline, which is conducive to the growth and development of river crabs. In the process of aquaculture, aquatic weeds grow well, which can not only promote the growth of river crabs, but also effectively prevent the occurrence of diseases, so as to improve the quality of breeding and achieve the purpose of increasing production and income.

So without aquatic weeds, it is difficult for crabs to survive.

It is unscientific and unrigorous to say that black algae is the best aquatic plant for cultivating river crabs.

First of all, from the perspective of the environmental needs of the germination and growth of black algae, it needs to grow in waters with a temperature of more than 16 degrees Celsius. As a result, most of the northern region could not have a normal sound field in the early spring when the temperature fluctuated between high and low. Melanophylla is not the best aquatic plant for river crab farming.

Secondly, the best ecological environment for river crab farming is not maintained by an aquatic plant. Under the joint creation of a variety of aquatic plants, the rational use of aquatic plants such as Elophylla, Rotaba, Goldfish Algae, Lotus, Water Peanut, Water Chestnut can make the healthy growth of river crabs.

Growing aquatic plants in river crab ponds has the following advantages: River crabs prefer to live in water bodies with a quiet environment, overgrown aquatic weeds, fresh water quality and abundant dissolved oxygen. The production practice proves that the quality of aquatic weed planting has a great relationship with the effect of river crab breeding, and the cultivation technology of aquatic weeds is one of the key technologies of river crab culture.

The advantages of planting aquatic weeds can be summarized as follows: aquatic weeds are important nutrients for river crabs**; It is an indispensable place for river crabs to perch, hide and molt; It can play a role in purifying, stabilizing water quality and improving substrate; It has a pharmacological effect that cannot be ignored; It is an important environmental factor for river crab farming. River crabs and aquatic plants coexist in mutual benefit, forming a diversified composite ecosystem combining the bottom, water and water surface, which not only improves the economic benefits, but also improves the social and ecological benefits.

There is a fishing proverb: "How many crabs, look at the aquatic plants", which vividly illustrates the importance of planting aquatic plants in crab ponds.

Common aquatic plants in production include Elophylla, Black Algae, Goldfish Algae, Peanut, Water Hyacinth, Bitter Grass and Duckweed.

Summary. You can't raise crabs without growing aquatic plants. The benefits of aquatic weeds for crabs are very great. In summer, it can block the sun, it can be food for crabs, it can purify water quality, etc.

Do crabs have to put aquatic plants in the water?

You can't raise crabs without growing aquatic plants. The benefits of aquatic weeds for crabs are very great. In summer, it can block the sun, it can be food for crabs, it can purify water quality, etc.

Crab ponds are planted with elophylla to purify water quality and prevent eutrophication. Elophylla can not only release a large amount of oxygen in the process of photosynthesis, but also absorb a large amount of harmful ammonia nitrogen, carbon dioxide and remaining bait dissolved substances and some organic decomposition substances continuously produced in the water, which is of great significance for stabilizing the pH value, keeping the water quality neutral and alkaline, increasing the transparency of the water body, promoting molting, improving feed utilization, and improving quality. It is a natural barrier, which is convenient for crabs to turn over their shells for crabs to move, hide and shed, so that they can grow faster, reduce the incidence rate and improve the survival rate.

Where is the best place to plant aquatic plants?

It is advisable to plant submerged plants, floating leaves and floating plants in the deep water area of the crab pond, and it is better to plant upright plants in the shallow water area.