Technology of raising earthworms with cow manure

Earthworm is a general term for annelid oligochaeta. In 1837, it was called the most valuable animal on earth by biologist Darwin. In traditional Chinese medicine, it is called Dilong (Kaibian Dilong, Guangdi Dragon). The Compendium of Materia Medica says it has the functions of activating channels, activating blood circulation and removing blood stasis, prevention and treatment of cardiovascular and cerebrovascular diseases. let's take a look at the technology of raising earthworms with cow dung.

Advantages of raising earthworms with cow manure

The fermented cow manure was used to raise earthworms on the idle land in the local countryside, and the problem of manure treatment was solved. While cow dung raises earthworms, earthworm dung can improve soil quality and grow crops, and crop straw can also raise livestock, thus forming a closed cycle of green environmental protection industry chain. In the whole process, the energy is used layer by layer, and the loss is minimum. at the same time, it increases the residents' income, gradually improves the surrounding environment, makes full use of idle resources, and realizes the unity of economic interests and ecological interests. In addition to the natural fermentation of cow manure, this new earthworm culture method can also use microbial EM bacteria to ferment cow manure as the main bedding and feed for earthworm breeding, which can more effectively solve the problem of cow manure pollution in cattle farms and make the farms without any bad smell. Earthworms can be sold to flower and bird markets and fishing gear stores in neighboring provinces and cities. Generally speaking, the average income per mu of earthworms raised by cow dung can reach more than 20,000 to 30,000 yuan.

The prospect of raising earthworms with cow manure

Many professional cattle farmers have a large number of cows and beef cattle, which produce a large amount of cow dung every year. In the past, most of the cow dung was sold to nearby farmers for composting, selling it for 20 to 30 yuan a ton. As it is impossible to achieve harmless treatment, the stacking of cow dung everywhere has caused a headache in the environment. Using the technology of raising earthworms with cow manure, earthworm farms can not only deal with cow manure, but also bring rich economic benefits. Generally speaking, an acre of land can produce about 1 ton of earthworms every year, with a net profit of about 10,000 yuan per ton, while dozens of tons of earthworm manure can be sold for about 200,000 yuan per ton each year (prices vary greatly in different places). This alone can earn thousands of yuan. Raising earthworms with cow manure can not only bring a lot of benefits, but also achieve "zero emission" in the process of raising cows and beef cattle. It also formed an ecological chain of crop straw raising cattle-cow manure raising earthworms to produce green ecological fertilizer-earthworm manure to promote crop production.

Benefits of raising earthworms with cow manure

Earthworms have a wide range of uses, and dried earthworms have high medicinal value. The red earthworm "Taiping No.2" was cultured with cow dung. During the growing period of 2 to 3 months, the yield of fresh earthworm was about 2000 kg per mu, the market price of dry earthworm (medicine named Dilong) was 800.170 yuan / kg, fresh earthworm was 150.30 yuan per kilogram, earthworm manure was 20000400 yuan / ton, and the income per mu could exceed 30,000 yuan. Fresh earthworms are mainly used in fishing supplies, animal extracts, processing of agricultural and sideline products, raw animal medicines, fishery utensils, etc., earthworms are in short supply, there is never a shortage of sales, and even the feces of earthworms can change money. The feces discharged by earthworms contain a large number of beneficial microflora and two kinds of antagonistic microorganisms, which can not only analyze all kinds of nutrients in the soil, but also improve the characteristics of soil structure and solve the problem of soil consolidation completely. the current market price of this manure is 200 yuan per ton.

The risk of raising earthworms with cow manure

1. Environment: although the prospect of earthworm breeding is very broad, it is not an easy task to raise earthworms successfully. Because earthworms have very high requirements for the environment, if the temperature is lower than 5 ℃ or higher than 32 ℃, earthworms will enter a dormant state. If the temperature is lower than 0 ℃ or higher than 40 ℃, earthworms will not be able to survive. In addition, earthworms eat a lot of food.

2. Technology: in addition to regular feeding and controlling temperature and humidity, earthworm breeding is also very important for the prevention and control of diseases and insect pests. Leeches, frogs, mole crickets, ants and mice are all its natural enemies. The requirement of technology for breeding earthworms is relatively high. Do not believe some advertisements and invest blindly on a large scale without seriously learning earthworm breeding techniques. You can try it first and accumulate experience.

3. Market: before raising earthworms with cow dung, we must find stable and mass sales channels before we can breed earthworms on a large scale.

4. Variety: buying earthworm seedlings once can propagate and raise many batches of earthworm seedlings, but this way can easily lead to the degradation of earthworm varieties, such as slower growth, increased mortality, lower quality and so on.

The technique of raising earthworms with cow manure

1. Feed formula: 50% cow dung, 50% pulp sludge, or 100% cow manure or 100% mixture of all livestock manure, or 20% each of cow manure, pig manure, chicken manure and 40% rice straw scraps. Chicken manure needs to be used to raise maggots or keep for more than a year before it can be used to raise earthworms, otherwise all the earthworms will escape or die.

2. Feed fermentation: first spread a layer of dry material with a thickness of 10 cm to 15 cm with straw and straw, then spread 4cm dung on the dry material and repeat 5 layers of dung. Spray water with a kettle on each layer until the water seeps out. If garbage is used, one layer of garbage is piled up on the dung floor. No limit on length and width, and covered with film, in the higher temperature season, turn every 7 days, generally turn 3 mi 5 times to complete the feed fermentation work.

3. Feed preparation: after the feed is fermented, test the PH value. The suitable PH value of earthworm feed is generally required to be 67.5, but the PH value of many animal and plant wastes is often higher or lower than this value. When PH exceeds 9, acetic acid, salt or citric acid can be used as buffers.

4. Culture density: the number of earthworms raised by cow manure should be controlled within 10, 000 per square meter, the production of earthworms should be 3 kg per square meter (2 ~ 31000), 30, 000 young worms per square meter in the early stage, and decreased to 20, 000 in the later stage.

5. Timely feeding: usually earthworms can turn all pig manure into earthworm manure in about 20 days. When feeding, the new material can be covered on the basis of the original feed, and the amount of feed can be determined according to the food intake of earthworms. The feed should be laid evenly, coupled with rice straw, and often watered and moisturized.

6. Reasonable watering: in order to ensure the normal growth of earthworms in the process of breeding earthworms, especially in summer, water should be watered at least once a day, the water should not be polluted, and the water flow should not be too large, so that the upper and lower layers should be connected. It is best to choose a lower temperature in the morning or evening.