How to select the seeds of foxtail algae? What are the values?

Foxtail algae, also known as Ceratophyllum verticillata, is a sturdy perennial submerged herb of the family Erbiaceae and Ceratophyllum. There are 4-5 common species of the genus foxtail algae in China, such as small fox tail algae, spike fox tail algae, verticillium verticillata, trifid leaf fox tail algae and so on. Foxtail algae can remove ammonium nitrogen and nitrate nitrogen from polluted water (including sediment), can also be ornamental, and can be used as feed for pigs and ducks. So how to choose the seeds of foxtail algae? What are the values? Next, let's have a look with the editor.

First, how to select the seeds of foxtail algae?

The seeds of foxtail algae have dormancy period, which can be preserved for several years under dry conditions, and the dormancy is released in the spring of the following year. The optimum temperature for seed germination can reach 20 ℃, and can germinate in dark and long light. The germinated seedlings can float on the water surface and spread with water. The flowering period is from August to September. The seeds are sown in the field before rice harvest and spread with irrigation and drainage.

Second, what is the value of foxtail algae?

1. Landscape value

Foxtail algae, native to South America, is a sturdy perennial submerged herb with cylindrical stems, multi-branched stems, alternate aquatic leaves, lanceolate, and a very exquisite and beautiful shape. It was introduced into China as a water landscape plant more than 200 years ago. The rhizome of foxtail algae is very developed, which can spread in the bottom mud, the nodes take root, and its leaves grow very rapidly. In China, foxtail algae are found in ponds, ditches and swamps all over the north and south, and are often mixed with foxtail algae.

2. Environmental protection value

A large number of studies have shown that the removal efficiency of ammonium nitrogen, nitrate nitrogen and total nitrogen in polluted water (including sediment) has reached more than 90%, showing a very significant removal effect. Even in different seasons, green foxtail algae has a good purification effect on nitrogen and phosphorus in eutrophic water and has a good tolerance to the change of weather and temperature.

Therefore, the ecological ditch or ecological wetland technology can be used for the treatment of agricultural non-point source pollution in river water, landscape water and catchment areas with farmland drainage, domestic sewage, rain flood and aquaculture wastewater as the main pollution sources. However, the introduction of foxtail algae to control water quality must go through reasonable planning, salvage and control its growth range regularly so as not to affect the ecological environment of the water area.

3. Economic value

Foxtail algae also has high economic benefits. Foxtail algae can be used not only as an ornamental plant, but also as high-quality feed and green manure, especially for grass carp and pigs.

After beating, mixing with a certain proportion of corn meal and other raw materials, sealed fermentation for 7-10 days, fox tail algae pig feed, chicken feed, duck feed and cattle feed can be developed. The meat products made from animals raised with this feed have unique fragrance and are loved by the majority of consumers. In Jiangsu and Zhejiang areas, foxtail algae has become the most popular pig feed for many sow farmers.

The above is the introduction of foxtail algae, which gets its name because it is shaped like a fox's tail. It has a removal capacity of 97% to 99% of chemical oxygen demand and ammonia nitrogen and phosphorus in sewage, and is called "water purification spirit". It has high landscape value, environmental protection value and economic value.

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