Harm and control methods of water hyacinth

The water hyacinth has a strong reproductive ability because it covers the whole lake, so that other plants in the water cannot carry out photosynthesis, and the animals in the water do not get enough air and food. Can not maintain the ecological balance in the water. But the harm of water hyacinth is also many, today the editor will introduce to you the harm and prevention methods of water hyacinth.

What are the hazards of water hyacinth?

The water hyacinth adopts a barbaric blockade strategy on the surface of the water where it lives, blocking the sun, causing underwater plants to die without enough light, destroying the food chain of underwater animals and causing the death of aquatic animals. At the same time, no ship of any size can come and go freely in the territory of water hyacinth. Not only that, water hyacinth also has the ability to enrich heavy metals. After death, the decaying body of water hyacinth sinks to the bottom of the water to form a layer with high content of heavy metals, which directly kills benthos. It can be described as a three-in-one extinction strategy!

Because of its rapid reproduction and almost no competitors and natural enemies (although many wild and domestic animals feed on its stems and leaves, the amount of food intake is small, which has no effect compared with its huge growth), water hyacinth develops rapidly in rivers and lakes in the south of China, and has become one of the main alien invasive species in freshwater bodies in China. Water hyacinth is mainly distributed in southern China; because of the freezing period in northern rivers, water hyacinth cannot survive in its natural state. However, in recent years, with the global warming and the evolution of its natural selection, its hazard area has a tendency to expand northward.

Prevention and control of the harm of water hyacinth

Dugongs can be introduced and used to control fertile hyacinth. Compared with herbicides, the herbicides are polluting, expensive and unstable (which may enhance the drug resistance of hyacinth). Dugongs are pollution-free, cheap and have a good control effect. In the 1950s, water hyacinth was brought to the Congo basin in Africa. Three years later, the water hyacinth triumphed over all its aquatic plant rivals and spread across the 1500km river in the upper reaches of the Congo River, blocking the waterway.

In order to eliminate the water hyacinth, the local government spent a lot of money spraying herbicides along the river, but in less than half a month, the water hyacinth grew rapidly again. Later, manatees (dugongs) were invited, a water hyacinth that can eat more than 400,000 square meters a day, so the river opened up and the Congo River regained its former vitality.

Conclusion: water hyacinth is often used as a landscaping material in garden waterscape. Planted in a corner of the pond, framed with bamboo, wild and quiet. In addition, hyacinth also has a strong ability to purify sewage. If the rational use of water hyacinth not only does no harm but can help nature, today's editor's introduction to the harm and prevention of water hyacinth ends here.