What kind of soil pond is better for cultivating locusts? On what basis?

Leech, also known as leech, has been a precious medicinal material since ancient times, and it can be used for angina, cerebral infarction, twisting and other symptoms. At present, the Internet resources of pure natural leeches have declined sharply, and Japan has to import 100 tons of leeches from China every year, resulting in a continuous increase. Leech farming cost is low and the effect is very good.

Concrete pond culture is used.

In fact, in view of this feeding difficulty, I personally think that it is more appropriate to use concrete ponds, that is, to build fish ponds for feeding. After all, many people are fed in this way, because this breeding technology is stronger, it is more convenient and faster to catch and salvage, and feeding is more beneficial, so looking at this problem, most people will use this method to feed in the process of feeding leeches. Don't look at this leech, he usually looks rampant.

But judging from the situation of mass feeding by everyone, he is not so rampant.

Not only is it not so rampant, but it is also very fragile, and it is even easy to die, so the feeding technology is very high, so it is not easy for ordinary people to feed this leech at will. Therefore, for the reproductive technology, it is not only necessary to learn the daily management problems, but also to make a lot of analysis of the feeding well, the pathophysiology and its standard of living. If long-term feeding is to be carried out, we need to make stronger research and shaping on our reproductive difficulties.

For grasshopper farming. There were many people who used to spread the word that farmers in the countryside were feeding this product. However, we also believe that some people have already been deceived.

Therefore, we are based on the practitioners of this kind of product, so from our own industry, this advanced point of view, so that we can more reasonably understand that the uniqueness of the product is not something that everyone can grasp. This kind of commercial breeding, if you make a reliable breeding site, can not make a profit for at least 2 years. After grasping the technology, it will gradually make a profit when it is further moving towards the third year.

It is better to choose neutral soil, but also choose a more fertile soil. It is necessary to choose a relatively strong ability to retain water and fertilizer. Grasshoppers are very sensitive to changes in the external environment, so they must not let the temperature or humidity change too much.

I think it's better to use a more viscous soil because it is better to maintain the health of the soil. Such soil can better help the locusts grow, and their nutritional value can be heard, and their medicinal value can be heard.

Because grasshoppers like harder soil, we must choose harder soil when breeding grasshoppers, but the soil must be fertile.

Leech, commonly known as leech, grows and breeds in inland freshwater waters, is a traditional Chinese special medicinal aquatic animal, and its dried products are soaked in traditional Chinese medicine, which has the effects of stroke, high blood pressure, stasis, amenorrhea, bruises, etc. In recent years, it has been newly discovered that leech preparations have special effects in the prevention and treatment of cardiovascular and cerebrovascular diseases and anti-cancer. Therefore, the development of leech aquaculture has good market prospects and economic benefits.

Breeding method 1, swamp, mud pond culture: swamp, mud pond aquatic plants lush, organic matter, humus content, plankton, aquatic plants abundant, therefore, as long as the fence is built, to prevent escape, against natural enemies. This model has a low investment cost and is more troublesome to manage and fish.

2. Rice field interbreeding: digging ditches and ditches in rice fields as the main activity places of leeches, generally excavated according to the shape of "well" and "ten", divided into two types: ditch and mud pond. The chute requires uniform distribution, extending in all directions, which is conducive to the growth and foraging of leeches, generally wide meters, water depth meters, and the area of the chute accounts for about 10% of the total area; The mud pond type is to dig the mud pond inside the paddy field, the mud pond is connected with the paddy field ditch, the ditch width and the ditch depth are about meters, and the depth is about 15% of the paddy field, and the pesticide application of the paddy field is harmful to leeches.

Generally, choose high-efficiency and low-toxicity pesticides, do not use chemical fertilizers, and it is better to use animal manure, which is not only conducive to rice harvest, but also a good feed for leeches.

3. Cement pond breeding: build a cement pond of about 20 square meters, 3 meters wide, 7 meters long, 1 meter - meter high, water depth meters, do a good job of inlet and drainage facilities, outdoor cement pond needs to put aquatic plants and other plants, so that leeches can inhabit. The newly built cement pond can not immediately put the leeches, the alkaline substances of the pool body (Portland cement, calcium hydroxide, etc.) need to go through 20 days of desalination before the seedlings, can not be a one-time seedling, after the overall environmental conditions of the breeding pond tend to the overall balance of the food chain, in order to gradually increase the amount of seeds, generally 100 per square meter.

4. Standardized intensive intensive culture: It is recommended that the pond is 90 meters long, 7-8 meters wide, the pond is deep, the water is deep, the intake and drainage facilities are done, the soil habitat is built, the water surface is high above the water, aquatic plants are planted on it, and the 40-mesh polyethylene mesh is used to prevent escape. Generally, 2,000 leeches are planted per mu of water area.

1. Site selection and pond construction.

Choose a place that is sheltered from the wind and the sun and is convenient for drainage and irrigation to build a pool. The pool is 3 meters wide and 1 meter deep, and there is no limit to the length. There are water inlets and drains at the opposite corners of the pool, and some stones and branches are placed at the bottom of the pool for leeches to perch.

Small-scale aquaculture can be cultivated in puddles, barren ponds, and ponds. The inlet and drainage inlets should be fenced with barbed wire or plastic mesh to prevent leeches from escaping.

2 Seed stocking.

Artificial breeding is better for money leeches (commonly known as cow leeches), and brown leeches can also be put here. Leeches are very common in rice fields, ponds, streams, and jungles, and should be identified when capturing seeds, and the seed release standard is about 10,000 per cubic meter. The selection criteria are:

Robust, injury-free, large size (20 30 grams is the best), the sample of leeches lays a large number of eggs, has a high hatching rate, and can be processed after 10 months of stocking**.

3 Bait feeding.

Leeches feed on snails, mussels, frogs, turtles, earthworms and mammals. Artificial breeding can use a variety of blood mixed feed, grass meal, and even manure, etc., and about 25 kg of live snails can be put into each mu at one time, so that they can reproduce naturally, and leeches can eat freely. Animal blood is usually fed once a week.

The specific method is: put the blood clots of pigs, cattle and sheep and other animals into the pool, put a piece every 5 meters, and the leeches will soon gather after smelling the fishy smell, and disperse on their own after sucking.

4 Management Techniques.

The first is to regulate water quality. Although leeches can grow in sewage, but due to the high density of artificial breeding, the water quality should be kept fresh, and at the same time to ensure a certain amount of dissolved oxygen, when the oxygen content in the water is less than 2 milligrams of liters, leeches will surface and appear uneasy. In summer, the water temperature is high, so pay attention to proper water change.

The second is wintering management. Leeches are dormant in winter, and those stocked in early spring have generally grown well and can be processed**. When fishing, the water is released and then scooped up with a net.

Select the seeds with large and robust growth, and leave 10 15 kg per mu and put them into the breeding pond for wintering. When the temperature of the thermal insulation pond is above 15 in winter, leeches can feed and grow, so as to shorten the breeding cycle and achieve the purpose of year-round feeding. When the water temperature of the feeding pond is 15 30, the leech grows well, stops feeding below 10, and affects the growth above 35.

5 Reproduction. Leeches reproduce quickly and have strong regenerative power. The Yangtze River basin is generally spawning from late April to mid-June. Artificially bred leeches, egg cocoons are laid in the soil at the water's edge of the breeding pond platform, and are oval-shaped.

Each leech produces about 4 cocoons at a time, and hatches small leeches about 16 25 days after the cocoon is produced, and 13 35 cocoons can be produced in each cocoon. Baby leeches are brownish-yellow in color and grow rapidly, growing on average 20 mm long within a month of hatching.

"Artificial Cultivation of Medicinal Grasshoppers".

About the breeding technology of medicinal leeches.

The scientific name of leeches is leech, which is a annelid, containing hirudin, which can inhibit thrombin, has the function of anti-coagulation and blood congestion, and has high medicinal value. Japan, South Korea, and Southeast Asian countries imported a large number of leeches from China, and according to relevant data, the shortage of leeches in 2002 was at least 100 tons. Therefore, the artificial breeding of leeches has a very broad prospect.

Leech artificial breeding technology:

1. Site selection and pond construction. Choose a place that is sheltered from the wind and the sun and is convenient for drainage and irrigation to build a pool. The ridge around the pond is 1 meter high, the water depth is 1 meter, and the size of the area should be determined according to the amount of feeding.

Generally, 6-100,000 young leeches can be stocked per mu of water surface. The water inlet and the drainage outlet are set diagonally in the pond to facilitate the habitat and spawning of leeches, and some irregular stones or branches can be placed at the bottom of the pool, and 5-8 soil platforms should be built 20 cm higher than the horizontal plane in the middle of the pool, and each platform is about 1 square meter. The ridge of the pond should also be fortified with an escape ditch, built with bricks, the ditch is 12 centimeters wide, 8 centimeters high, when it rains, it is fenced with a dense net or sprinkled with some lime in the ditch, which can prevent escape.

Second, the seed release. Artificial breeding is better for golden hairpin leeches (commonly known as cow leeches). It is extremely common in rice fields, ponds, streams, jungles. The criteria for selection are: robust and harmless, large size (20-30 grams) is the best, such leeches lay a large number of eggs, and hatch.

High chemical rate. 3. Reproduction. Leeches are hermaphroditic, allofertilized, and fertilized eggs develop directly inside the cocoon. Artificially cultured leeches, egg cocoons are laid in the soil at the water's edge of the rearing pond platform, and are oval-shaped.

Each leech produces about 4 cocoons at a time, and about 16-25 young leeches hatch after the cocoon is produced, and 13-15 can be produced in each cocoon.

Fourth, bait feeding. Leeches feed on snails, mussels, frogs, turtles, earthworms and mammals. Artificial breeding can use a variety of blood mixed feed, grass powder and even manure, etc., and about 25 kg of live snails can be put into each mu at one time, so that they can naturally reproduce and feed leeches for predation.

Animal blood can be fed once a week, put the blood clots of pigs, cattle and sheep and other animals into the pool, put a piece every 5 meters, and the leeches will soon gather and suck after smelling the fishy smell.

5. Management technology. The first is to regulate the water quality and ensure a certain amount of dissolved oxygen. In summer, the water temperature is high, so pay attention to proper water change. The second is wintering management. Leeches are dormant in winter, and large and robust seeds should be selected when fishing, and they should be put into the breeding pond for wintering. ”

The leech breeding cycle is short, basically half a year. The maximum individual can reach 65 grams, with an average of about 35-50 grams, and the yield per mu can reach more than 100 kilograms. In terms of the current market, the output value per mu is not less than 18,000 yuan, and the net income per mu can reach more than 10,000 yuan.

It can be seen that the artificial breeding of leeches does not have much investment, and the breeding technology is not very complicated, and the effect is rapid. "[Leech breeding in Heshan Town, Tongxiang City, boosts farmers to get rich.

First, the construction of feeding ponds.

Ponds, ditches, and paddy fields can all be used as stocking ponds after transformation. The ridge of the artificially built feeding pond is 3 meters high, water depth and 3 meters wide, and the length should be determined according to the amount of feeding. Generally, 6.1 million young leeches can be stocked per mu of water surface, and about 20 kg of leeches can be put into the leeches.

In order to make it easier for leeches to inhabit, some irregular stones or branches can be placed at the bottom of the pond. If conditions permit, it is best to use one-third of the area to plant cocoons, lotus roots, aquatic weeds, cattails, etc., as a habitat for leeches. Set up a drainage and a water inlet at the level of the water surface, and block it with a mesh cloth to prevent leeches from escaping.

The newly opened ponds also need to be filled with some livestock manure to cultivate plankton, regulate water quality and increase humus content at the bottom of the ponds.

Second, daily management.

1.Maintain good water quality, strictly prevent pesticides and chemicals from polluting water sources, and do not use spring water that is too alkaline. Well water with too low a temperature must go through a certain process and wait for the temperature to rise before it can be used.

2.In the summer high temperature season, in order to avoid the poor growth of leeches due to the high temperature of the pond water, some shade plants should be planted by the pond, and the water should be changed frequently to keep the water temperature at 15 30.

3.Leeches have extensive feeding, snails, shellfish, grass shrimp and animal blood can be used as feed, but they should not be fed too much. Leeches reproduce quickly and have strong regeneration, and their spawning period is from early May to September, and they can hatch after 16 to 25 days.

If properly raised, each leech can grow by about 2 cm per month; If the pond is rich in nutrients, the feeding density is appropriate, and the water quality environment is good, it can be grown into adult leeches in autumn.

3. Processing of leeches.

Adult leeches are washed off dirt after harvesting, suffocated with lime water or liquor, or scalded to death with boiling water. Then thread one end with a thread and stretch one end of the body into a narrow strip. The finished leeches are preferably neatly sized and black-brown.

<>1. Choose a breeding site.

It is best to choose a place where leeches are easy to drain and irrigate, back to north and south, sheltered from wind and sunny. The depth of the pond is about one meter to one meter two, and the width of the pond is about three meters. The exact length can be determined depending on the size of the site.

The bottom of the pond is grouted with cement, preferably without leakage as well. The diagonal of the pond should be set in, and the bottom should be high in the north and low in the south, so that it is more square and can be drained and irrigated. The pond is generally filled with humus-rich sand, which is more conducive to the laying of eggs by leeches.

2. Pond water quality.

In order for leeches to grow smoothly, there must be good water quality and a suitable environment for its growth. Because the water density of artificial breeding is relatively large, it is necessary to change the water well in the process of feeding, so as to better prevent the pollution of pesticides and fertilizers. In the season when the temperature is relatively high, it is generally necessary to keep the inlet and outlet places unobstructed, so that the water quality is fresh and has a certain oxygen lifting capacity.

3. Choose leech species.

The selection of leech species requires that the individual is relatively hypertrophied, preferably with good mobility, smooth body surface, bright color, and no injury.

4. Leeches overwinter.

Leeches are very hardy, so they are not easy to freeze to death. If you breed leeches in captivity, you need to use straw around the pond to keep them warm and help them survive the winter.