A method for continuous cultivation of selenium-enriched earthworms
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An earthworm and selenium-enriched technology, applied in food processing, animal husbandry, additional food elements, etc., can solve the problems of declining reproduction rate, inability to continuously cultivate, and degeneration of earthworm species, achieving great application value, long elimination and decomposition time, reducing effect of loss
Active Publication Date: 2019-12-10
CHINA AGRI UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the problems of earthworm species degeneration, reproductive rate decline, and inability to continuously cultivate in the process of cultivating selenium-enriched earthworms in the prior art, thus proposing a method for continuous cultivation of selenium-enriched earthworms
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Embodiment 1
[0026] The method for continuous cultivation of selenium-enriched earthworms comprises the steps:
[0027] (1) according to the ratio that mass ratio is 3:1, take fermented cow dung and bacterium residue, cross 4mm sieve respectively, then mix homogeneously, obtain the substrate of cultivating earthworms;
[0028] (2) Join the sodium selenite aqueous solution containing 0.1g selenium in the matrix in 10kg step (1), add water and regulate the matrix water content to 65%, in 12-28 ℃ of aging one week, obtain selenium concentration and be 10mg / kg of selenium-containing matrix;
[0029] (3) Introduce primary adult earthworms into the selenium-containing substrate described in step (2), cultivate them at a temperature of 12-28° C., add the selenium-containing substrate every 15 days, and after the earthworms have been cultivated for 40 days, wait until the first generation of larvae appear. Or take out the original earthworm after cocooning to get the first generation selenium-en...
Embodiment 2
[0037] The method for continuous cultivation of selenium-enriched earthworms comprises the steps:
[0038] (1) according to the ratio that mass ratio is 3:1, take fermented cow dung and bacterium residue, cross 4mm sieve respectively, then mix homogeneously, obtain the substrate of cultivating earthworms;
[0039] (2) Join the sodium selenite aqueous solution that contains 0.2g selenium in the matrix in 10kg step (1), add water and adjust the water content of matrix to 70%, in 12-28 ℃ of aging two weeks, obtain selenium concentration and be 20mg / kg of selenium-containing substrate;
[0040] (3) Introduce the primary adult earthworms into the selenium-containing substrate described in step (2), cultivate them at a temperature of 12-28° C., add the selenium-containing substrate every 20 days, and after the earthworms are cultivated for 40 days, wait until the first generation of young earthworms appear Or take out the original earthworm after cocooning to get the first generat...
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Abstract
The invention discloses a method for continuously cultivating selenium-rich earthworms in the technical field of agricultural production. The method comprises the following steps: uniformly mixing fermented cow dung with mushroom dregs in a mass ratio of 3:1, adding a sodium selenite aqueous solution, regulating water content, and ageing, so that a selenium-containing matrix is obtained; introducing primary generation adult earthworms and cultivating, and separating out primary generation earthworms; continuing cultivating first filial generation young earthworms, and separating out first filial generation adult earthworms; continuing cultivating second filial generation young earthworms, and separating out second filial generation adult earthworms, so that the selenium-rich earthworms continuously cultivated for three generations are obtained. The method disclosed by the invention adopts low-concentration selenium for cultivating the earthworms and has higher selenium enrichment efficiency, yield of the earthworms and reproductive rate are basically not influenced, selenium content is increased along with intergeneration reproduction, freeze drying is adopted for treating the selenium-rich earthworms, and active ingredients of the earthworms can be reserved to the utmost extent. Density of the mushroom dreg in the matrix is low, so that good air permeability is guaranteed; and the ratio of the fermented cow dung is higher, and the influence that decomposition time of the mushroom dreg is long and the mushroom dreg cannot be fully utilized within a short time can be eliminated.
Description
technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a method for continuous cultivation of selenium-enriched earthworms. Background technique [0002] Selenium is an essential trace element for the growth and development of humans and animals, and is also a beneficial element for plant growth. Selenium participates in the composition of various important functional enzymes in the body, and plays a variety of important biological functions in the human body, such as anti-oxidation, anti-aging, detoxification, anti-cancer and anti-cancer, etc. It is very important for maintaining human health and normal physiological metabolism. important role. The distribution of soil selenium resources in my country is uneven and there are large areas of selenium deficiency areas, which directly leads to insufficient supply of selenium in food, the main source of selenium for the human body, and then affects human heal...
Claims
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