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Method for early propagation and cultivation of wide-body golden-line leech seedlings

The invention relates to a technology of a wide-bodied golden leech and a cultivation method, which is applied to the fields of early propagation and artificial cultivation of high-quality seedlings of the wide-bodied golden leech, and can solve the problem of the small number of breeding egg cocoons, moisture retention, air permeability and softness. As well as problems such as difficulty in controlling pests and being easily affected by climatic conditions, the effects of increasing the content of humus and softness, shortening the artificial breeding cycle and reducing the mortality of seedlings are achieved.

Inactive Publication Date: 2019-04-16
JIANGSU LIXIAHE REGION AGRI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This traditional method of raising seedlings has many disadvantages, such as: cocoon production and incubation platforms built on farmland soil are difficult to control in terms of moisture retention, air permeability, softness, and insect damage; the workload is large, time-consuming and laborious; it is easily affected by climate conditions. impact, the emergence rate is low, and the seed production stability is poor; there are still pesticide residues in the farmland soil, which will cause great damage to the broad-bodied golden leeches, etc.
Due to the above reasons, the number of leech breeding egg cocoons is small and the hatching rate of egg cocoons is low, which affects the quality of seedlings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Use black and white film plastic sheeting and its steel structure support to build a greenhouse above the soil ridge, covering an area of ​​400m 2 . Building soil ridges in the greenhouse: length 20m, width 1.5m, depth 0.5m, adjacent soil ridges are separated by 1m. A 1.2m-high anti-escape net is set up at the bottom of the ridge and around it, with a 15cm anti-escape edge extending from the edge of the anti-escape net. The control group was set up according to the traditional method of building a cocoon-producing platform, and straw curtains were laid on the top of the soil ridge to play the role of shelter from rain and heat preservation. Three replicates were set up for each treatment. After the cocoon production platform is built, the breeding density of leeches is 20 / m 2 .

[0042] Daily management: Sprinkle water from time to time depending on the dryness and humidity of the soil layer to keep a certain humidity on the cocoon-producing platform. During the cu...

Embodiment 2

[0047] A foam box with a length of 58cm / width of 48cm / height of 20cm is used as the incubation device. The bottom of the box is covered with a 3cm incubation substrate. The egg cocoons are neatly placed on the substrate, and the egg cocoons are covered with a 3cm incubation substrate for indoor incubation. Incubation time is approximately 20-25 days.

[0048] Production method of hatching substrate: Pond bottom mud needs to be processed through three steps of high temperature exposure, drying, crushing, and sieving to kill microorganisms such as pests and harmful bacteria in the bottom mud; mushroom residues are mechanically crushed, added with microorganisms, and then fermented at high temperature , to kill the microorganisms such as pests and harmful bacteria in the fungus residue; the bottom mud of the pond and the mushroom fungus residue are mixed according to the ratio of 1:1, and they are used as the incubation medium for later use;

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Abstract

The invention discloses a method for early propagation and cultivation of wide-body golden-line leech seedlings, which firstly breaks through a technical key of the early propagation and cultivation of a wide-body golden-line leech at home successfully and creatively carries out artificial cultivation on a breeding leech and the seedlings thereof in a greenhouse. By adopting the greenhouse and indoor artificial hatching directional breeding technology, the breeding leech is promoted to produce cocoons in advance and hatch, and quickly growing of the seedlings in early spring is a success. Mushroom fungus residue is used as an egg cocoon hatching matrix, so that a humus content and softness in a soil hatching matrix are improved, and a hatching rate of the egg cocoon is promoted to be as high as 98 percent. By the adoption of the method for the early propagation and cultivation of the wide-body golden-line leech seedlings, a growth period of the seedlings can be prolonged for nearly twomonths, a high-temperature culture stage can be safely passed and mortality of the seedlings can be reduced. Agricultural waste is adopted to replace the soil hatching matrix, an application mode ofthe agricultural waste in the aquaculture industry is extended, the agricultural waste is changed from singleness to diversification, the quality of the leech seedlings is improved, the breeding costis reduced, and meanwhile, the development of rural economy and the protection of an ecological environment are promoted.

Description

technical field [0001] The invention relates to a method for early propagation and cultivation of wide-bodied golden leech seedlings, in particular to a method for early propagation and artificial cultivation of wide-body golden leech high-quality seedlings. Background technique [0002] Broad-bodied golden leeches ( Whitmania pigra ), belonging to the Phylum Annelids, Class Hirudophylum, Phylumidae, Phylumidae, and Genus Chrysalis, commonly known as leech, is one of the three major medicinal leech breeding species in my country, and its dried products are traditional Chinese medicinal materials with special effects in my country. There is a huge demand for medicinal leeches in the medicinal material market. Due to environmental pollution and artificial overfishing, wild resources are almost exhausted, and the production of wild leeches can no longer meet market demand. On the other hand, Europe and the United States have a large consumer market. In recent years, Japan, Nor...

Claims

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Application Information

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IPC IPC(8): A01K61/40
CPCA01K61/40
Inventor 吴雷明王守红寇祥明张家宏韩光明徐荣王桂良朱凌宇毕建花唐鹤军
Owner JIANGSU LIXIAHE REGION AGRI RES INST
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