In the process of aquaculture, aquatic weed rot often occurs for various reasons in the middle and late stages. At this time, there are basically no aquatic weeds in the water body, and the water quality will gradually deteriorate into old green water and turbid water, and some ponds will even have fish, shrimp and crab casualties. Therefore, some old iron will plant floating plants when the pond water grass is gradually decreasing. But these floating plants also have a harmful side of the water body, let's analyze the advantages and disadvantages of several common floating plants.
1. Water peanuts
Water peanuts are also known as hollow lotus grass and dry lotus grass. It can absorb ammonia nitrogen and inorganic salts in water bodies. Water peanuts have good shading, especially in summer, which can significantly shade the sun and avoid direct sunlight causing water temperature to rise, so the pond mouth is planted with water peanuts in an appropriate amount, and the comprehensive benefit is very good.
duckweed
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2. Duckweed
Duckweed has a strong reproductive ability, can absorb ammonia nitrogen, organic matter, etc. in the water body, and has a significant water purification effect. After planting, the duckweed should be fenced with dense nets to prevent a large number of breeding and breeding and spreading to the whole pond.
The best time to plant duckweed is in June, which can be fished in the river or crab pond covered with duckweed, evenly sprinkled on the water surface, and can be planted in moderation in the high temperature season, but it should still be encircled.
Water hyacinth
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Third, water hyacinth
Water hyacinth likes warmth, strong root absorption, can enrich nutrients in water bodies, and has an obvious effect on the consumption of residual bait at the bottom of the pond. In addition, water hyacinth can also be used as pig feed and compost.
However, the water hyacinth grows and multiplies quite rapidly, and once it breaks out, it will consume a large amount of dissolved oxygen in the water body, and the living space of fish, shrimp and crabs will be greatly compressed, and even lead to a large number of suffocation deaths. Therefore, the release of water hyacinth in fish ponds should control its growth range and time to prevent a large number of breeding, otherwise it will seriously affect the growth of fish, shrimp and crabs.
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