The harm and function of water lotus

Water hyacinth, water hyacinth, water hyacinth and so on. It is widely distributed in the Yangtze River and Yellow River basins of China and the provinces of South China. It has been introduced by many countries and widely distributed all over the world. It has also been listed as one of the top 100 alien invasive species in the world. Let's take a look at the harm and effect of water lotus.

The harm of water lotus

1. The water-floating lotus blocks the waterway, affects shipping and excretion, and becomes the number one enemy of agriculture, water conservancy and environmental protection.

2. the water body restricts the flow of the water body, and the water body becomes smelly without sunlight, which reduces the amount of dissolved oxygen in the water body, inhibits the growth of plankton and destroys the ecological environment of the river.

3. Water lotus provides a breeding ground for germs such as Schistosoma japonicum, encephalitis and influenza, mosquitoes and flies, and provides opportunities for mosquito larvae to breathe and reproduce.

4. Water lotus will destroy drinking water resources, due to blockage, the water body can not flow freely, various pollution sources such as heavy metals and other trace elements harmful to human body can not be effectively removed, and people absorb polluted water sources directly or indirectly.

5. The evaporation of water covered by water floating lotus is also increased, which is 8 / 10 times higher than that of open water surface, resulting in water source loss.

6. The water floating lotus has an influence on the fresh water quality of the water source. Covering the water surface with a large number of water lotus will reduce the PH value of the water, increase the concentration of CO2, increase the olfactory concentration and chromaticity of the water, and increase the acidity of the water, which greatly reduces the use value of water resources until it is undrinkable.

7. The outbreak and decay stage of water floating lotus will consume a large amount of dissolved oxygen in the water body at the same time, and the breeding space of underwater animals such as fish will be reduced, and even a large number of fish will die.

The function of water floating lotus

1. Agricultural use: Nelumbo nucifera has a strong enrichment effect on nitrogen, phosphorus, potassium, calcium and other elements, especially for a large number of element potassium. In the existing ways of resource utilization, it is relatively simple and common to compost organic fertilizer and produce biogas, and can also directly use its dry powder or the ash after combustion as fertilizer or soil improver.

2. Edible: water-floating lotus flowers and tender leaves can be eaten directly, they taste refreshing and refreshing, and have the effect of moistening the intestines and defecation. Indigenous people in Malaysia and other places often use the young leaves and flowers of water lotus as vegetables.

3. Feeding: water water lotus is soft and juicy, fresh, tender and delicious, rich in nutrition, and the dry matter is mainly crude protein, crude fat, crude fiber, etc., which can be used as excellent feed for chickens, ducks, geese, fish and pigs. It is chopped, crushed or pulped and mixed with bran to make mixed feed or silage, which can not only improve the feed utilization rate, but also kill parasites.

4. Medicinal use: the whole grass has a light taste and cool nature. it has the effects of clearing heat and relieving heat, diuresis and detumescence, and dispelling rheumatism. It is used for heatstroke, edema, adverse urination and external application of heat sores. The whole plant is used to treat heatstroke and thirst, nephritis edema, adverse urination, boils and boils. The whole herb is used to treat urinary calculi. The whole herb treats cold and fever, red pain in urination, rubella, redness and swelling of boils and sores.

5. Viewing: water lotus is a floating herb with well-developed whisker roots, very short stems, light blue flowers, multi-angled trumpet-shaped flowers and large petals above. There is an obvious bright yellow spot in the center of the petal, shaped like Phoenix eyes, and also like the flower spot at the end of the peacock feather, which is very pleasing to the eye and beautiful. It is often the landscaping material in the garden waterscape. Planted in a corner of the pond, framed with bamboo, wild and quiet.

6. Environmental protection: water lotus is a good plant for monitoring environmental pollution. It can monitor the presence of arsenic in water and purify harmful substances such as mercury, cadmium and lead in water. In the process of growth, it can absorb a large amount of nitrogen, phosphorus and some heavy metal elements in the water body, and the water body containing more organic matter is more effective for purifying industrial wastewater or domestic sewage.

Treatment of water lotus

1. Prevention and control of water pollution: water eutrophication is the foundation of continuous reproduction and growth of water lotus, so it is necessary to prevent the flooding of water lotus from the source. With the substantial improvement of people's living standards and the continuous expansion of the population, the discharge of domestic sewage and the content of organic matter have been greatly increased, which provides an important source of nutrition for the growth of water-floating lotus, so it is necessary to control the discharge of domestic sewage and the orderly discharge of industrial and agricultural wastewater. when it is really necessary to discharge, it must be treated with pollution-free chemical water before discharge.

2. Mechanical stirring method: for the water area with great harm, the relevant machinery can be used to destroy and break it, expand the light area of the water body, increase the flow of the water body, and ensure the smooth progress of aquaculture, fishing and shipping.

3. Manual removal method: using manpower and material resources to directly pick up the floating lotus and transport it to the land to be removed. This is also the most frequently used method at the beginning of the period, and the effect is better for the small water surface. If the water area is too large, the cost of manpower and material resources is too high and it is not recommended to use it.

4, chemical control method: if in the rice field ridge or vegetable stubble field, use 20% per mu to make it emulsified 50ml, can be sprayed with water. If it is at the edge of a river, pond or ditch, use 41% Nongda water agent 300,400ml per mu, 30 grams of herbicide smoke, 60 grams of paraquat or 36% glycyrrhizic sulfonate soluble powder 300 grams, spray 20 kilograms of water to make the liquid adhere to the stems and leaves of water.