How much profit can you make per mu of land by raising earthworms?
The rise of the earthworm farming industry has not only opened up a new source of animal protein feed for the development of livestock, poultry and aquaculture, but has also found a new way to purify the urban environment and deal with public hazards, and with in-depth research into earthworm physiology it can also provide valuable raw materials for the food, pharmaceutical and other industries. Let's take a look below at how much profit a mu of earthworm farming brings!
How much does it cost to invest in raising earthworms on one mu of land?
1. Feed (cow dung, pig manure, chicken manure, spent mushroom substrate all work) 100 cubic meters, at 20 yuan per cubic meter, totaling 2000 yuan.
2. Self-bred worm seed 100 kg, calculated at a cost of 20 yuan per kg, totaling 2000 yuan.
3. Land occupation fee for 1 mu, at 600 yuan per mu, totaling 600 yuan, plus 500 yuan for water, electricity and tools.
4. Raising earthworms on one mu requires an investment of 5100 yuan.
How much profit does one mu of earthworm farming bring?
1. Earthworms: generally an annual yield of 2 to 3 tons of fresh earthworms per mu, with high yields reaching 5 tons. Calculating at the lowest of two tons, the current market price is above 10000 yuan per ton, so calculating at the lowest of 10000 yuan per ton gives an income of 20000 yuan.
2. Worm castings: 40 tons, at 150 yuan per ton, totaling 6000 yuan.
3. Total: raising earthworms on one mu can bring an income of 26000 yuan.
4. Profit: 26000 yuan - 5100 yuan = 20900 yuan. If workers are hired to carry out large-scale farming, workers' wages must also be paid.
Extension: Earthworm farming techniques
1. Feed formula: 50% cow dung and 50% paper pulp sludge, or 100% cow dung, or 100% mixed poultry and livestock manure, or 20% each of cow dung, pig manure and chicken manure plus 40% rice straw fragments. Chicken manure must first be used to raise maggots or left to sit for more than 1 year before it can be used to raise earthworms, otherwise the earthworms will all escape or die.
2. Feed fermentation: first spread a layer of dry material 10 to 15 cm thick of rice straw and stalks, then spread 4 to 6 cm of manure material, repeating for 3 to 5 layers, spraying water on each layer until the water seeps out. In seasons with higher temperatures, turn it once every 7 days; generally turning 3 to 5 times completes the feed fermentation work.
3. Feed preparation: after the earthworm feed has fermented well, test the PH value. Generally the suitable PH value is required to be 6 to 7.5, but the PH value of many animal and plant wastes is often higher or lower than this range. When the PH exceeds 9, acetic acid, table salt or citric acid can be used as a buffer.
4. Farming density: for raising earthworms with cow dung, the number of breeder earthworms should be controlled within 10000 per square meter; the production worm population is 3 kg per square meter (20000 to 31000 worms), with 30000 young worms per square meter in the early stage, dropping to 20000 in the later stage.
5. Timely supplementary feeding: usually in about 20 days the earthworms can turn all the cow dung into worm castings. When supplementing feed, new material can be spread over the original feed. Determine the amount of feed added according to the earthworms' food intake. The feed should be spread evenly, plus rice straw, and water frequently to keep it moist.
6. Reasonable watering: to ensure normal growth of the earthworms, especially in summer, water at least once a day. The water must not be polluted, the water flow should not be too strong, and it must be watered thoroughly so that the upper and lower layers of material connect. It is best to water in the early morning or evening when the temperature is lower.