Does duckweed affect crayfish growth Does water surface duckweed too thick have an effect on crayfis

Duckweed does not affect the growth of crayfish, which has a wide range of adaptability and a wide range of suitable growth temperatures.

At the same time, the duckweed after death and decay dissolves the organic matter such as phosphorus and nitrogen into the water body or precipitates into the sediment, and the duckweed decays in the water, which will also consume the oxygen in the water, which is not conducive to the survival of shrimp.

Duckweed is a kind of water surface derivative plant, if a large number of reproduction, it will cause a decrease in oxygen in the water quality, which has a certain impact on the normal survival of crayfish.

There are a lot of duckweed in the crayfish breeding pond, do not use drugs, you can put 300 grass carp per mu of pond can solve the problem. Putting drugs is very toxic to the growth of lobsters.

It is recommended that you go to the Fisheries Bureau and ask the experts, some of the people here love Hu Zou.

<>1. Duckweed is an aquatic plant, the growth of the plant must ensure sufficient water, and when breeding duckweed potted plants, it needs to be changed frequently to ensure the growth of the plant. The water is changed once a week in spring and autumn, once every 2 days in summer, and once every 10 to 15 days in winter.

2. Insulation measures: duckweed likes a warm environment, the most suitable temperature for growth is about 20 25, its cold tolerance is poor, and it must be moved indoors for thermal insulation when breeding in winter. The ambient temperature is not less than 5 °, and the water temperature is not less than 10, so that the plants can successfully overwinter.

3. The growth rate of duckweed is very fast, and it is necessary to cut off its stunted, long, and diseased branches and leaves in time during daily maintenance to avoid unnecessary loss of nutrients, so that the plant is more lush.

Duckweed is too dense, blocking sunlight and air, at the same time, after the dead and rotting duckweed, and the consumed phosphorus, nitrogen and other organic matter dissolved into the water or precipitated into sediment, duckweed rotting, will also consume oxygen in the water, more unfavorable to the survival of shrimp.

The aquatic plants planted in the crayfish breeding pond mainly include submerged plants, floating plants, and upright plants, which are generally mainly planted with submerged plants and floating plants, supplemented by upright plants. The main varieties of submerged plants are: Elophylla, Bitter Grass, Vulgaris, Marley Eyeweed, Goldfish Algae, etc.; The main species of floating plants are:

water peanuts, water hyacinths, water lotus, duckweed, etc.; The main varieties of water plants are: reed, cocoon, cucumber, cattail, etc.

Planting requirements: Crayfish breeding ponds should adhere to the principle of "uniform distribution, variety matching, and appropriate density" to meet the needs of crayfish habitat, feeding, growth and reproduction. Planted in the pond ** in a tic-tac-toe shape, planted in a mouth shape along the water line of the pond side of the pond by 1 meter, and the aquatic weed planting point should not be too dense to ensure the normal life of the lobster and the smooth swimming channel; It is advisable to plant black algae and water peanuts in the pond**, and it is better to plant elophylla and bitter grass around the pond; The cover density of aquatic weeds is controlled at about 60% of the total area of the shrimp pond, and it should be manually removed when it is too much, and it should be replenished in time when it is insufficient.

The impact is too great, and there will be a lack of oxygen.