Aquatic seedling raising water-rich nutrient and preparation method thereof

Abstract

The invention provides an aquatic seedling raising water-rich nutrient and a preparation method thereof. The preparation method comprises the following steps: taking an earthworm breeding waste liquid, mixing the earthworm breeding waste liquid with Rhodopseudomonas palustris, performing culturing in an anaerobic environment for 3-7 days under illumination until the effective viable count is 1-10billion cfu / mL, cultivating the Rhodopseudomonas palustris by utilizing earthworm breeding wastewater, and effectively converting organic matters and nitrites in the earthworm wastewater and components such as hydrogen sulfide through propagation of microorganisms to prepare the microbial seedling raising water-rich nutrient containing a large amount of beneficial living bacteria. The water-rich nutrient also contains a large amount of organic matters and nutrient elements such as quick-acting N, P and K, so that beneficial algae and planktonic animals and plants can be quickly cultivated in water, and the cultivation water can quickly reach a state suitable for the growth and development of aquatic organisms. The aquatic seedling raising water-rich nutrient is used as a starter feed and afertilizer water element in the aquatic product seedling raising period, and has the effects of improving the culture water quality, degrading ammonia nitrogen and nitrite in water and increasing dissolved oxygen in the culture process.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to an aquaculture seedling fertilizer and a preparation method thereof. Background technique [0002] Earthworms are one of the important Chinese medicinal materials with a long history in my country. With the continuous excavation of active substances of earthworms and the development of medicinal products, the development and utilization of earthworms as a functional protein source in the breeding industry, the outstanding performance of earthworms in the treatment of livestock and poultry manure, urban waste, agricultural waste, and crop planting With the application effect, large-scale farming of earthworms continues to develop and become a new way of getting rich. [0003] However, earthworms like a highly humid environment, and when the weather is hot, they often spray water on the earthworm bed due to the need for cooling. Therefore, a large amount of breeding wastewat...

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Problems solved by technology

[0003] However, earthworms like a highly humid environment, and they often spray water on the earthworm bed due to the need for cooling in hot weather. Therefore, a large amount of breeding wastewater will be generated during the earthworm breeding process.

These wastewaters carry a large amount of earthworm secretions, and the earthworm breeding wastewater also contains nutrients and active ingredients in the vermicompost, such as organic matter, nitrite, etc. Direct discharge is likely to cause environmental pollution and waste of resources.