What are the seed selection methods and main values of Myriophyllum?
Myriophyllum, also called whorled water milfoil, is a perennial robust submerged herb in the Haloragaceae family and the genus Myriophyllum. In China, there are commonly 4-5 species of Myriophyllum, such as Myriophyllum humile, Myriophyllum spicatum, Myriophyllum verticillatum, and Myriophyllum triphyllum. Myriophyllum can remove ammonium nitrogen and nitrate nitrogen from polluted water bodies (including sediment), and it can also be enjoyed as an ornamental plant and used as feed for pigs and ducks. So how do you select Myriophyllum seeds? What values does it have? Let's take a look together below.
1. How do you select Myriophyllum seeds?
Myriophyllum seeds have a dormant period and can be stored for several years under dry conditions, with dormancy breaking in the spring of the following year. The optimum temperature for seed germination can reach 20-25°C, and they can germinate in both darkness and long light. The germinated seedlings can float on the water surface and can spread with water. The flowering period is from August to September. Before the rice harvest, the seeds are sown in the field and spread with irrigation and drainage.
2. What values does Myriophyllum have?
1. Landscape value
Myriophyllum is native to South America and is a perennial robust submerged herbaceous plant. Its stem is cylindrical and much branched, and its emergent leaves are alternate and lanceolate. Its appearance is very delicate and beautiful, and it was introduced into China more than 200 years ago as a water landscape plant. The rhizome of Myriophyllum is very well developed and can spread in the bottom mud, rooting at the nodes, and its leaves grow very rapidly. In China, Myriophyllum is found throughout ponds, ditches, and swamps in both the north and south, often mixed with Myriophyllum spicatum.
2. Environmental value
A large number of studies have shown that the removal efficiency of Myriophyllum for ammonium nitrogen, nitrate nitrogen, and total nitrogen in polluted water bodies (including sediment) has reached more than 90%, showing a very significant removal effect. Even in different seasons, green Myriophyllum has a good purification effect on nitrogen and phosphorus in eutrophic water, and it has good tolerance to changes in weather and temperature.
Therefore, for the treatment of river water bodies, landscape water bodies, and agricultural non-point source pollution in catchment areas where farmland drainage, domestic sewage, rainwater and flood, and aquaculture wastewater are the main pollution sources, Myriophyllum ecological ditches or ecological wetland technology can be used for treatment. However, the introduction of Myriophyllum for water quality treatment must undergo reasonable planning, regular harvesting, and control of its growth range, so as not to affect the ecological environment of the water area.
3. Economic value
Myriophyllum also has very high economic benefits. Myriophyllum can not only be used as an ornamental plant, but can also be used to make high-quality feed and green manure, especially as feed for grass carp and pigs.
After pulping Myriophyllum and mixing it with a certain proportion of corn meal and other raw materials, and sealing and fermenting for 7-10 days, it can be developed into Myriophyllum pig feed, chicken feed, duck feed, cattle feed, and so on. The meat products made from animals raised with this feed have a unique fresh fragrance and are deeply loved by consumers. In the Jiangsu and Zhejiang regions, Myriophyllum has become the most favored pig feed for many specialized sow farmers.
The above is an introduction to Myriophyllum. Myriophyllum gets its name because its shape closely resembles a fox's tail. Its removal capacity for chemical oxygen demand, ammonia nitrogen, and various phosphorus in sewage reaches 97% to 99%, and it is called the "water purification elf," with high landscape value, environmental value, and economic value.
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