Duckweed biological source growth promoter and preparation method thereof and application

Abstract

The invention belongs to the field of aquatic energy culture and particularly relates to a duckweed biological source growth promoter and a preparation method thereof and application. The preparation method comprises washing, drying, smashing and screening portulaca oleracea, placing the portulaca oleracea in a bolting cloth bag, adding distilled water, performing ultrasonic extraction for 0.5-1.5 h, performing centrifugation for 10-15 min, and taking and concentrating supernatant. When in application, the growth promoter only needs to be scattered to the duckweed culture water body, and the using amount ratio of the effective ingredient portulaca oleracea in the promoter and the duckweed culture water body is (1-3g):(1L). The duckweed biological source growth promoter can quickly and effectively improve the growth velocity of duckweed, the duckweed biomass weight gain rate can be improved by over 89% after the application, and the growth promotion effect is good; besides, no secondary pollution is caused to the water body, and the duckweed biological source growth promoter is green, safe and environmentally friendly. A using method is not subjected to the limitation of the water body conditions, and the duckweed biological source growth promoter can quickly promote the growth of duckweed in the eutrophic water body or the oligotrophic water body and is good in adaptability.

Description

technical field [0001] The invention belongs to the field of aquatic energy culture, and particularly relates to a duckweed biological source growth promoter and a preparation method and application thereof. Background technique [0002] Duckweed is the whole grass of Duckweed or Chingweed, which is a common floating plant on water surface in all provinces of our country. Duckweed has the potential to remove mineral pollutants from sewage. It is a major aquatic plant for water purification, and its biomass mainly contains protein, carbohydrates, lipids, crude fibers and minerals. It is currently mainly used in animal feed. , biofuel, sewage treatment, etc., has a very wide range of application prospects. For example, researchers use duckweed as a model plant to study the basic growth and development, biochemistry, photosynthesis and toxicity of harmful substances. Geneticists clone duckweed-related genes and improve duckweed to produce cheap medicines. Environmental scien...

AI Technical Summary

Problems solved by technology

However, the disadvantage of the traditional method is that it is easy to cause eutrophication of the water body, especially in the case of field cultivation; the main deficiency of the new cultivation method with plant growth regulators is that the growth regulators currently used are basically chemical preparations, which have the advantages of Residual toxicity, lack of specificity of drug efficacy, and long-term single use have the risk of resistance. It is urgent to develop a biogenic growth promoter that can quickly and effectively increase the growth rate of duckweed.

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