What kind of aquatic plants are best to raise crabs? How to feed is the most correct? Suggest collection!

People who raise crabs should have heard the saying, "if you want to raise water for raising crabs, you should recommend raising water." this is enough to show the importance of aquatic plants in crab farming. What kind of aquatic plants are best to raise crabs? How to feed is the most correct?

What kind of aquatic plants are best to raise crabs?

1. Verticillium verticillata

Verticillium verticillata likes high temperature, good adaptability, long growth period, strong regeneration, river crab likes to eat, suitable for planting in crab ponds and large water surfaces with sufficient light. The verticillium verticillata has strong vitality. After being cut off by the river crab, the broken nodes can take root by themselves, so it will not cause water quality deterioration.

2. Elaeagnus

Elodea germinates early and grows fast, especially when other aquatic plants have not yet grown in the early stage, only Elodea can provide an ideal place for the growth, habitat, molting and avoiding enemies of river crabs. But Elorella is not resistant to high temperature and grows luxuriantly. When the water temperature reaches 30 ℃, the growth is basically over, the water is easy to stink, and the planting area is controlled within 20%, which is generally planted as a transitional aquatic plant.

3. Goldfish algae

Goldfish algae is resistant to high temperature, crabs like to eat, strong regeneration, obvious advantages, but the disadvantage is that prosperous hair is easy to cause smelly water. Therefore, goldfish algae is more suitable for planting on large water surface. When goldfish algae flourish, it should be artificially thin to avoid the phenomenon of dead grass and smelly water after it is too dense to affect photosynthesis.

4. Sophora flavescens

Sophora flavescens has the advantages of crab liking, no smelly water and high temperature resistance, but its disadvantage is easy to be destroyed. Especially in the season of feeding crabs during the summer high temperature period, if you do not pay attention to protection, the loss will be very heavy. In some crab ponds dominated by bitter grass, the high temperature period is less than a week, and it is too late for crab farmers to look for grass, and the bitter grass is all cut off by crabs. It is estimated that the cost of fishing grass in crab ponds dominated by bitter grass is 70-120 yuan / mu. Grass fishing is not in time, resulting in the deterioration of water quality, or even smelly, the emergence of "stinky Lusha", causing a large number of river crabs to die, so it is necessary to fish grass in time to avoid loss.

Second, how to feed water plants is the most correct

1. Raising crabs in paddy fields in ponds

To raise crabs in paddy fields in ponds, you can choose Ellosia, bitter grass and verticillium verticillata. The place of early growth, molting and avoiding enemies of river crabs can be built with Elorella, because Elorella germinates early and grows fast, so it can be used as a transitional aquatic plant in spring and summer. Before the advent of the high temperature period, in order to avoid erosion and deterioration of dead crabs in smelly water after the death of Elodea, the grass head should be cut off and only about 10 cm above the root should be retained. The proportion of Elorella in the early stage should be controlled at about 20% to facilitate the gradual elimination of the high temperature period. Bitter grass is a favorite food for crabs and can be used as a "snack" for river crabs to ensure adequate plant feed for river crabs. The proportion can be controlled at 20% Mel 30%, and fresh and delicious "snacks" can be supplied to river crabs for a long time. In order to avoid being broken by river crabs at one time, Sophora flavescens can be sown in batches and staggered growth periods. Taking advantage of the characteristics that verticillium verticillata likes high temperature, crab likes to eat and is not easy to be destroyed, the culture mode of pond and rice field can be planted mainly. The coverage rate of verticillium verticillata should be controlled at 40% 50%, and the places of summer shelter, habitat, molting and enemy avoidance of river crabs in summer can be replaced by verticillium verticillata.

2. Raising crabs in rivers and lakes

Crabs are raised in rivers and lakes, and the choice of aquatic plants is mainly goldfish algae or verticillium verticillata, supplemented by Ellosia and bitter grass. Goldfish algae or verticillium verticillata are mostly planted at the junction of shallow and deep water, and the proportion of total aquatic plants should be controlled at 40% 50%. Many kinds of Sophora flavescens are in shallow water, accounting for about 10%. If the "light pond" wants to be cultivated into a crab pond in the same year, some Elorella should be planted in the early stage, and the coverage should be controlled at about 20%. In order to avoid erosion and deterioration of dead crabs in smelly water after the death of Elodea, the grass head can be cut off in the high temperature period, leaving only 10 cm above the root. No matter what kind of aquatic plants, it is appropriate not to come out of the water or affect the wind and waves.

The cultivation of high-quality aquatic plants is a major prerequisite for the cultivation of large-scale high-quality river crabs, so farmers want to improve the quality of cultured crabs, the choice of aquatic plants and feeding methods must not be careless.