Start-up Project of Fish and vegetable Symbiosis in soilless Ecological Culture of Monopterus Albus Loach

Nanjing Yiwei Biotechnology Co., Ltd. is now holding a monthly training course on ecological breeding technology of Monopterus Albus Loach to train the entrepreneurial skills of ecological farming and efficient agriculture returning home. The technical director of our company, Dr. Zhou Wenzong, is a famous expert and scholar in the field of ecological aquaculture in China. He has presided over 24 provincial projects, participated in the "Tenth five-year Plan" national major science and technology project, the national science and technology research plan, the 863 plan and 11 provincial projects, and holds 7 national invention patents as the first inventor. After more than 20 years of scientific research, he has achieved ten major technological innovations in the field of ecological aquaculture. In recent years, he has broken through the traditional aquaculture methods and initiated four core technologies of scientific and technological innovation, namely, soilless culture of rice field eel in aquaculture membrane pond, soilless culture of Loach in aquaculture membrane pond, overwintering and early sowing of eel in cage culture, and symbiosis of yellow Misgurnus anguillicaudatus with vegetables and fruits in the same pond. In line with the tenet of "training one family, successful one family, pulling one township, radiating one county", the company takes centralized training technology as the basis, base internship as the means, tracking service as the link, and the pharmaceutical and feed industry chain as the backing. Vigorously develop Loach ecological circulation breeding industry.

I. four innovative achievements in the field of ecological breeding

Achievement 1. Technology of soilless culture of Monopterus Albus in still water in impervious membrane pond

Characteristics of eel culture mode in impervious membrane pool: ① solves the problems that cages can not survive the winter and the water surface is difficult to manage; ② pool construction cost is half of that of cement pool; a single person can complete the construction of a thin film pool in one day (digging pool, installing water inlet, spreading membrane); ③ high-quality primary polyethylene resin impervious membrane is produced by Italian equipment and American standard, which is non-toxic, environmentally friendly and fast in construction. High mechanical strength, good chemical stability, anti-plant root penetration, high anti-seepage coefficient, anti-aging, anti-ultraviolet, strong anti-decomposition, good plasticity, which can guarantee eight years of service life; ④ fish pond is easy to observe, complete water exchange and silt removal, long water shelf life; spraying solution has no dead angle and good disease prevention effect; in winter, the water temperature is higher than that of cement pond, which is beneficial to prolong the feeding period of Monopterus Albus Loach. ⑤ fishing operation can "catch all in a net", no missed catch; ⑥ pond wall is smooth, will not cause fish surface mucosal damage, reduce the incidence of fish disease; ⑦ land reclamation is the best; ⑧ fish pond does not need to be dealkalized and disinfected.

Achievement 2. Technology of soilless culture of Loach in impervious membrane pond

The traditional pond purse seine has soil to cultivate Loach, the yield per mu is only 200 to 300 kilograms, and because of its smooth body, it has the habit of drilling into the soil, which brings great difficulties to fishing, the recapture rate is not high, and affects the yield and benefit. On the other hand, the impervious film pond combined with soilless culture of Loach in cage prolongs the growth period of Loach and makes it possible to realize production all the year round. And the stocking density is high, the cage setting water area selection is flexible, the unit yield is high, the management is convenient, the recapture rate is 100%, and the overwintering is convenient, so it is a kind of intensive breeding method.

Achievement 3. Techniques of overwintering and early sowing of eel in cage

The breeding of Monopterus Albus is usually concentrated from late June to the end of July (the temperature of early release is unstable, the breeding peak of Monopterus Albus is at its peak, and the survival rate is low). The shortage of supply leads to a surge in seedling prices. In recent years, Zhou Wenzong invented the technology of planting in advance, which can be planted all the year round (April, May, August, September, etc.). The seedlings purchased in April are only about 10 yuan, and can be sold for more than 20 yuan at the peak at the end of June. The technique of planting seeds in advance can prolong the growth cycle, increase the multiple of weight gain, and solve the problem of overwintering.

Achievement 4. "Fish and vegetable symbiosis" technique in Monopterus Albus Loach Culture Pond

Although the water hyacinth raised on the surface of the rice field eel in the pond has the function of regulating water quality, it has the problem of competing for space with the eel. In the fish-vegetable symbiosis system, vegetables can absorb nitrogen, phosphorus and other nutrients discharged by fish metabolism in cultured water, remove 80% suspended matter and 70% organic matter in water, reduce biological oxygen consumption by 90%, and keep the PH value of water in the standard range. The plant fungicides secreted by the roots of aquatic vegetables can kill 90% of the pathogens, making the fish pond water body have the ability of self-repair. The full-price compound feed equipped with this system contains fish meal, bone meal and other raw materials, which just supplement the trace elements needed for the growth of vegetables. At present, the vegetables successfully planted are hollow cabbage, water celery, lettuce, tomato, strawberry and virgin fruit. It increases the benefit and avoids the excessive growth of water hyacinth.

II. Investment benefit analysis

The technical and economic goal of ripening: the survival rate is 900.95%, the ratio of economic output to investment is 1.9%, and the cost and profit margin is 90.9%. Such as adding earthworms and aseptic maggot live baits or miscellaneous fish, livestock and poultry leftovers (3 jin feed can be matched with 1 jin of small miscellaneous fish) in the feed. Feed mainly, supplemented by live bait, can not exceed 1 beat 2), which can reduce the feed cost of 1 beat 3-1 hand 2.

(1) Investment benefit analysis of soilless culture of Monopterus Albus in impervious membrane pond.

The cost of building ① pool (depreciated according to the service life of 8 years): 40 yuan / 8 years = 5 yuan / year; ② seedlings: 30 yuan / kg × 1.5kg/ eggs = 45 yuan / year; ③ feed: 3.5kg/ eggs × 2 (bait coefficient) × 8 yuan / kg=56 yuan / fish; ④ fish medicine: 2 yuan / fish; ⑤ labor cost: 100000 yuan / person / 2000 yuan / year; ⑥ water, electricity and other expenses: 3 yuan / million; total: 116yuan / year.

According to the calculation of each 20 yuan / pond eel pond, the production cost is 2320 yuan / year (including: 100yuan for pond construction, 900yuan for seedling investment, 1120 yuan for feed cost, 40yuan for medicine, 100yuan for labor, 60yuan for utilities and other expenses). Product income: 4200 yuan per year. Net profit: 1880 yuan / year pool. In addition to removing the ridges between the ponds, 500 eel ponds and 25 ponds have been built per mu. )

(2) Investment benefit analysis of soilless culture of Loach in impervious membrane pond.

Based on the calculation of 11 ponds, a standard aquaculture impervious membrane is required for 1 volume (420 tons), each tank is 20 tons, a total of 220 tons.

1. Fixed investment (depreciated according to 8 years)

(1) film: 3300 yuan; (2) water pipes and supporting facilities: 800yuan; (3) labor cost: 800yuan; (3) greenhouse: 6000 yuan. The above total according to depreciation: 1360 yuan / year.

2. Working capital

(1) Seedling: 250kg × 30 yuan / kg = 7500 yuan; (2) feed: 500kg × 3.5x4 yuan / kg = 7000 yuan; (3) medicine and water and electricity charges: 200yuan, the total above: 14700 yuan.

Total fixed investment and working capital: 16060 yuan.

3. Production benefit

It is calculated on the basis of only one season (usually two seasons a year in greenhouse culture):

For the production of 750kg Loach, the price is 30 yuan / kg, the income of 11 ponds is 22500 yuan, and the net profit is 6440 yuan. In addition, the profit of symbiotic vegetables in the same pond is 1000 yuan, and the total net profit is 7440 yuan. The profit per square meter is about 34 yuan, equivalent to 22540 yuan per mu, and the profit margin is 45%.

(none of the above takes into account the income of aquatic vegetables. Different vegetables can be planted according to the season every year, five or six fresh vegetables can be harvested in one season, thousands of jin of vegetables can be increased per mu, and the cost of water exchange can be reduced by hundreds of yuan per mu. If the variety and layout of aquatic vegetables are reasonable, the cost of fish medicine will also be reduced. )

III. Contents of entrepreneurial training in ecological culture of Monopterus Albus Loach

1. Training subjects

① "Monopterus Albus ecological culture techniques" (cage culture; film pond soilless culture; overwintering and early soillage techniques; introduction to semi-artificial propagation techniques); ② "Loach ecological culture techniques" (pond purse seine culture; cage culture; film pond soilless culture; cement pond soilless culture; paddy field culture; biogas manure culture; methods to improve the growth rate of Loach; brief introduction of artificial propagation and breeding) ③ "bait high efficiency and high yield culture technology" (earthworm, aseptic fly maggot, yellow powder worm, red silk worm, etc.), ④ "water quality control and fish and vegetable symbiosis" high yield technology.

2. Late-stage technical services enjoyed by students

The company ensures the supply of industrial chains such as "seedling supply + feed supply + fishery medicine supply + impervious film supply". Increase the safety factor of students to start a business: students can enjoy preferential prices to supply special aquaculture film, seedlings, fish medicine and special formula feed, long-term free technical consultation service, free access to the follow-up technology of the training project. Technical consultation: 025-84825782