CN107087560B

CN107087560B - Establishment and application of ecological polyculture mode of penaeus vannamei boone and golden pompano

Info

Publication number: CN107087560B
Application number: CN201710155362.1A
Authority: CN
Inventors: 王永伟
Original assignee: Shaoxing Fishery Technology Promotion Station
Current assignee: Shaoxing Fishery Technology Promotion Station
Priority date: 2017-03-16
Filing date: 2017-03-16
Publication date: 2020-04-03
Anticipated expiration: 2037-03-16
Also published as: CN107087560A

Abstract

The invention discloses a ecological polyculture mode of penaeus vannamei boone and golden pompano, which is characterized in that: the method is characterized by comprising a culture pond capable of injecting water of 1.8-2.0m, wherein the area of the culture pond is more than 3 mu, the culture pond is provided with an independent water inlet and outlet system, the culture pond is thoroughly drained before culture, sludge in a circular ditch is fished up, the beach surface of the bottom of the pond is fully ploughed and solarized, golden pompano enters water one month before fry placing, bleaching powder is used for pulping and evenly splashing the bottom of the pond, mulberry branches are laid at the bottom of the pond 15 days before fry placing, the mulberry branches are immersed at the bottom of the pond, and Penaeus vannamei and golden pompano are mixedly cultured in an ecological mixed culture mode. The invention improves the water ecological environment of the ecological polyculture mode of the penaeus vannamei boone and the golden pomfret, thereby improving the survival rate and the yield of the penaeus vannamei boone and the golden pomfret.

Description

Establishment and application of ecological polyculture mode of penaeus vannamei boone and golden pompano

Technical Field

The invention relates to establishment and application of a penaeus vannamei and golden pompano ecological polyculture mode.

Background

Mixed aquaculture is an extremely important form of aquaculture research and utilization today, and several asian countries including china hundreds and even thousands of years ago have conducted various forms of fish and shrimp mixed aquaculture in aquaculture pond systems. However, the mixed culture of the prawns and the mullets is successfully carried out until 1979, and the mixed culture is primarily carried out in China, gradually develops and is further improved.

The mixed culture is a production form that various breeding organisms which are mutually beneficial are reasonably matched and cultured in the same system according to a certain quantity, density, specification and proportional relation according to ecological principles of ecological niche complementation, interspecies symbiosis, material circulation, energy flow and the like. Common mixed culture modes generally comprise 5 mixed culture modes of fish, shrimp, fish, crab, fish, shellfish, algae, fish, shrimp, crab, shellfish and algae. The mixed culture can fully utilize various natural baits and artificial feeds in the system, and improve the utilization efficiency of substances and energy; meanwhile, the organisms have strong self-regulation and external interference resistance through mechanisms such as mutual restriction, transformation, feedback and the like, and the problems of resource waste, environmental pollution, fragile ecological system and the like in the traditional culture mode are successfully solved.

The trachinotus ovatus meat is delicious, simple in feeding property, rapid in growth and strong in disease resistance, and can reach the market specification after being cultured for 4-5 months generally. In 1989, the trachinotus ovatus fries are successfully bred in Taiwan in China, and then culture is started in Fujian, Guangdong, Hainan and the like, the scale is gradually increased, and various culture modes such as ponds, floating rafts, net cages and the like exist. Because of the large amount of the compound feed, the feed has obvious economic benefit and is popular, and is one of excellent and rare fish species with better culture prospect. After years of high-speed development, due to unreasonable layout and overhigh culture density, the culture water environment and the ecological environment are deteriorated, the disease of the trachinotus ovatus is gradually serious, the product quality is reduced, and the culture benefit is increased every time. Researchers at home and abroad have conducted a great deal of research on trachinotus ovatus, for example, in 2006, the research explores suitable growth conditions such as temperature, salinity, dissolved oxygen and the like in artificial culture of trachinotus ovatus. The biology and cultivation techniques of trachinotus ovatus have also been described and studied in detail (liu chu, 2009). The Xiali et al also made detailed reviews on the major diseases of trachinotus ovatus and their research progress in 2012. However, most of the research reports focus on breeding, disease pathology, physiology and biochemistry, molecular markers and the like, and the research reports that the mixed culture of the trachinotus ovatus has little influence on the environment, particularly nitrogen and phosphorus balance, transformation and utilization of a culture system are reported.

In the aquaculture, in a culture system with artificial intervention, the aims of improving the yield and obtaining a large amount of aquatic products are fulfilled by feeding, fertilizing or only using natural baits and the like to culture objects. Each cultured object usually adapts to certain environmental conditions, and if the environmental conditions exceed the adaptation range, the cultured objects are difficult to grow, breed and even die. The traditional extensive breeding usually has higher ecological benefit, the high-density intensive breeding has higher economic benefit, and the mixed breeding can well give consideration to both economic and ecological benefits. But the latter also has a plurality of problems of variety collocation, stocking specification time, cultivation mode portability and the like in the production practice. Therefore, in practice of aquaculture production, the biological and ecological characteristics of the cultured objects have to be studied deeply, so as to grasp and utilize the living law and the relationship with the surrounding environment, and provide a high-efficiency, healthy and sustainable aquaculture service.

Golden pomfret, i.e. Trachinotus ovatus, belongs to Osteichthyes, Perciformes, Percoidei, trachinodae, Trachinoideae, Trachinotinae, and is widely distributed in the subtropical area of southeast Asia, the Atlantic coast of the American tropical, and the coastal area of China. Simple eating quality, rapid growth and strong disease resistance, and can be put on the market after being cultured for 4-5 months generally. The Hainan, Guangdong and Fujian are main culture areas, and the like, and the fish culture pond has a plurality of culture modes such as a pond, a floating raft, a net cage and the like, can use a large amount of compound feed, has obvious economic benefit, is popular, and is one of excellent and rare fish species with better culture prospect. Research shows that trachinotus ovatus is a wide-salt warm water middle and upper layer migratory fish capable of adapting to wide alkaline (pH7.6-9.6) water environment, salinity (3-33 per mill) and temperature (16-36 deg.C, most preferably 22-28 deg.C). But the growth is poor in high salinity seawater, the growth is rapid when the salinity is lower than 20 per thousand, and the growth is slow when the salinity is higher than 20 per thousand. The low temperature resistance is poor, the lowest critical temperature is only 14 ℃, and death can occur at the temperature below 14 ℃ for more than two days; when the water temperature is reduced to below 16 ℃, people can enter the wintering period (generally from the late 12 months to the 2 months of the next year) and stop eating; small amount of food intake at 16-18 deg.C; the food intake is strong only when the water temperature is above 22 ℃. And therefore, it will continuously consume oxygen in the water, resulting in a higher minimum critical DO (about 2.5 mg/L). Trachinotus ovatus is omnivorous and has meat-eating property, and young fishes which are just hatched in a natural state eat various planktonic and benthic organisms mainly including copepod larvae; the juvenile fish mostly takes the edible daphnia, hairy species, podosoma species and the like, and can eat the minced fish and minced shrimp when the juvenile fish grows to 2 cm; when the young adult fish stage is reached, except for feeding mollusks, fish, shrimp, crab larvae and the like, a proper amount of special feed can be fed; adult fish can eat clam, snail and other organisms because of its well developed throat plate. The artificially cultured trachinotus ovatus is usually eaten in the daytime, has large food intake, fast digestion, big predation and no mutual residual food phenomenon, and is often fed with the expanded floating seawater fish feed in the morning or in the evening.

Penaeus vannamei (Penaeus vannamei) belongs to the phylum Arthropoda, the class Crustacea, the order Decapoda, the order Narantia, the family Penaeidae (Penaedae), the genus Penaeus (Penaeus), the genus Penaeus (Litopenaeus), also known as Penaeus vannamei, Penaeus vannamei and Penaeus vannamei. The warm water areas native to the pacific coasts of central and south america are naturally distributed from the south of peru to the coastal areas of moringa, mexico, most concentrated along the coasts of ecuador. The shrimp grows rapidly, has strong adaptability and is resistant to high-density culture, can be cultured within 90 days generally, and is combined with the penaeus monodon and the Chinese prawn as three excellent shrimp seeds with the highest culture yield in the world at present. The soil is favored to be benthic under natural conditions, and the pH value is required to be maintained at about 8.0; DO is above 5mg/L and is at least 1.2 mg/L; can survive in water environment at 15-40 deg.C, and the growth temperature is suitable at 20-30 deg.C; usually, the salinity is required to be 10-34 per thousand, but the domesticated fish can be raised in 2 per thousand fresh water. The penaeus vannamei boone is prey on animals, and the larvae feed on diatoms, fairy shrimp, rotifers and other phytoplankton and benthonic animals; adult shrimps are fed by mollusks, algae insects and small crustaceans. Under the condition of artificial feeding, the nutrient requirement on the feed is low, but the requirement on the curing rate of the feed is high, and the prawns can grow and reproduce normally as long as the protein component in the feed accounts for more than 20 percent. Meanwhile, the organic debris such as residual bait, excrement, corpses and the like in the culture system can be fully decomposed and utilized.

The method is characterized in that a penaeus vannamei and golden pomfret polyculture mode is established in Sanmen county in Zhejiang province by popularizing station Panqing and the like, and by utilizing the characteristics of golden pomfret that ingests algae and zooplankton in water, the effects of improving water quality and reducing pathogen transmission are achieved, so that the occurrence of shrimp diseases caused by cultivated south America white is reduced, and the purpose of efficient ecological cultivation is achieved. The inventor obtains the first data of the mixed culture of the penaeus vannamei boone and the golden pomfret by exploring the mixed culture mode of the penaeus vannamei boone and the golden pomfret, and has important significance for adjusting the aquaculture industrial structure of Zhejiang province and promoting the diversification and sustainable development of aquaculture.

Disclosure of Invention

The method is applied to Shaoxing on the basis of a mode established by a group of aquatic product technology promotion stations in Sanmen county in Zhejiang province, and a ecological polyculture mode of Penaeus vannamei and golden pomfret is established on the basis of market requirements.

The improved method is characterized in that mulberry twigs are placed at the bottom of the pond, the mulberry twigs are rich in various nutrient substances such as pectin, cellulose, crude protein and the like, and elements contained in the mulberry twigs are shown in table 1. The mulberry twig bast contains crude protein 5.44%, cellulose 51.88%, lignin 18.18%, hemicellulose 23.02% and ash 1.57%. Xylem contains 19.11% lignin, 21.76% pentosan, 78.83% hemicellulose, and 2.32% ash. The mulberry twig contains many kinds of chemical components, mainly including flavonoid compounds, alkaloid, polysaccharide and coumarin compounds. Also contains amino acids, organic acids, volatile oil and vitamins; in addition, some massecuite, free sucrose, glucose, xylose, maltose, stachyose, fructose, raffinose, arabinose, picric acid and adenobuffalo are also present in mulberry branches.

TABLE 1 elemental composition of ramulus Mori

Composition (I)	N	C	H	O	Ash content
						Content (%)	0.4	44.25	5.56	49.41	0.38

According to the invention, the mulberry branches are placed in the fishpond, so that Dissolved Oxygen (DO) in water is effectively improved, and the water ecological environment of the ecological polyculture mode of the penaeus vannamei boone and the golden pomfret is improved, thereby improving the survival rate and the yield of the penaeus vannamei boone and the golden pomfret, and creating better economic benefit.

Accordingly, the present invention provides:

(1) a ecological polyculture mode of penaeus vannamei boone and golden pompano, which is characterized in that:

the water-saving and water-saving culture pond is provided with a culture pond capable of injecting water of 1.8-2.0m, the area of the culture pond is more than 3 mu, the culture pond is provided with an independent water inlet and outlet system,

thoroughly draining the culture pond before culture, fishing sludge in the circular ditch, fully turning over the bottom surface of the pond for solarization, feeding water one month before the golden pomfret is put in the pond, pulping with bleaching powder, uniformly splashing the bottom of the pond,

laying ramulus Mori at pond bottom 15 days before seeding, immersing ramulus Mori at pond bottom,

and polyculturing the penaeus vannamei boone and the golden pompano in the ecological polyculture mode.

(2) The ecological polyculture mode as described in (1), comprising

500-1500 butterfish tails/mu; the penaeus vannamei boone has 1,0000-2,0000 tails/mu.

(3) The ecological polyculture mode as set forth in (1), wherein,

the mulberry branches are bound into bundles every 10kg, and each bundle is fixed at the bottom of the pond by a weight.

(4) The ecological polyculture mode as set forth in (3), wherein,

the using amount of the mulberry twigs is more than 10 bundles per mu.

Drawings

FIG. 1 is a schematic view of an ecological polyculture mode in an embodiment of the invention.

FIG. 2 test results for dissolved oxygen concentration in ponds of group A of example of the invention (group D is control).

FIG. 3 test results for dissolved oxygen concentration in ponds in group B of example of the invention (control in group D).

FIG. 4 test results for dissolved oxygen concentration in ponds of group C of example of the invention (group D is control).

Detailed Description

Materials and methods

1. Design of experiments

The invention provides a fishpond of Shaoxing Mingcheng agriculture science and technology development Limited company, the pond culture area is 1,100 mu, a single pond is 10 mu, wherein a steel-structure greenhouse is 200 mu, a high-standard pond is 100 mu, the construction capital is 2,000 ten thousand yuan until now, and the base is a leading industry demonstration area of fishery in Zhejiang province. The size of the test pool is 10 mu, and the salinity of the water body is 15. Selecting 10 ponds for 100 mu for testing, wherein 500 tails/mu of golden pomfret and 2 ten thousand/mu of penaeus vannamei boone are polycultured in 3 ponds (group A); 3-pond polyculture of 1,000 tails/mu and 1.5 ten thousand/mu of penaeus vannamei boone (group B); 3-pond polyculture of 1500 tails/mu and 1 ten thousand/mu of penaeus vannamei boone (group C); 1-mouth pond singly-cultured penaeus vannamei boone is used as a control pond (group D). Specific experimental groups are shown in table 2.

TABLE 2 stocking and oxygen enrichment measures of the examples

2. Test method

(1) Cleaning and disinfecting the pond: dry pond cleaning and disinfection are generally carried out by using 150 kg/mu of quicklime. If the disinfection is carried out with water, 1.0-2.0 kg/m is used³And (3) disinfecting the quick lime or bleaching powder of 50-70 g/m to thoroughly kill enemy organisms, pathogenic organisms and intermediate hosts carrying pathogenic bacteria.

(2) Stocking the litopenaeus vannamei fries: putting nutrient young penaeus vannamei boone seedlings into a cement pond for temporary culture and marking the young penaeus vannamei boone to be thick and dividing the young penaeus vannamei boone into two stages, namely putting the young penaeus vannamei boone into the cement pond for temporary culture and marking the young penaeus vannamei boone to be thick²The stocking density is 200 thousands of tails per pond. After 20-30 days of temporary breeding and standard thickening, when the shrimp seedlings reach the body length of 3 cm, separating the shrimp seedlings, and entering an elevated pond breeding stage, wherein the stocking density of the first and third shrimp seedlings in spring of the whole year in the elevated pond is 18-20 ten thousand tails/mu, and the stocking density of the second shrimp seedlings in summer is 13-15 ten thousand tails/mu. The water temperature is about 20 ℃ during stocking. Within 15 days after the shrimp seedlings are temporarily nourished, every 2 to 3 daysChecking the breeding density of the shrimp seeds at one time, finding out the reason and supplementing the shrimp seeds when the breeding density of the shrimp seeds is relatively low.

(3) Stocking and temporarily breeding the fry: golden pomfret fry is purchased from the research institute of Shaoxing Zhongtian aquatic technology, introduced from Taiwan, and the body length of the fry is 1.2-1.3 cm. After the fry is introduced and temporarily raised for 1-2 weeks, the fry is placed in a shrimp pond and disinfected by potassium permanganate solution to reduce pathogen cross propagation. The fry breeding water temperature is above 16 ℃, and the mixed culture is started from the second-crop culture of the penaeus vannamei boone, namely the last 5 months, according to the water temperature condition in Zhejiang province. And (3) measuring yield of the golden pomfret when the south America white penaeus is caught, temporarily culturing the golden pomfret, and co-culturing for 2 to 11 middle-ten months after the golden pomfret is mixed with the next batch of south America white penaeus.

(4) Feed and feeding: selecting high-quality compound bait for Penaeus vannamei Boone, and determining the bait feeding amount according to weather, survival rate, residual bait amount, health condition, water quality environment, molting condition, drug use condition and biological bait amount. The bait is regularly fed for 4 times every day, and the time is 6:00, 11:00, 16:30 and 21:30 respectively. The polycultured golden pomfret is not fed with feed independently, and mainly takes residual feed, excrement and algae of penaeus vannamei boone.

(5) Water quality regulation and control: the main measures comprise regular water change, strict disinfection treatment of inlet water, mechanical oxygenation, regular quicklime splashing and the like, and the transparency of the water body is kept between 20 and 30 centimeters by pertinently regulating and controlling the water quality, the ammonia nitrogen content is below 0.5 milligram/liter, and the physical and chemical indexes of the water quality and the biomass are kept relatively stable.

(6) Daily management: the pond must be kept in patrol, the number of times per day is not less than 4, the conditions of water quality, bait consumption, shrimp and fish conditions, pond bottom color, fish damage in the pond and the like are well recorded, and emergency measures are timely taken to properly handle the found conditions.

(7) Disease control: although the incidence of diseases is low, the pond for polyculture of fishes and shrimps also has diseases of fishes and shrimps. In the culture process, the occurrence of diseases is mainly prevented by taking measures of dredging and disinfecting a pond, quarantine and disinfection of seedlings, regular water quality disinfection and the like. For ponds with diseases, drugs such as organic phosphorus, pyrethrin and the like are strictly forbidden when the ponds are used for treating the diseases.

(8) Fishing: the penaeus vannamei boone is caught by a shrimp cage, and the water body is drained to catch the penaeus vannamei boone after the penaeus vannamei boone is basically caught.

(9) Monitoring and determining relevant site hydration indexes: and (3) respectively carrying out Dissolved Oxygen (DO), water temperature (T), pH, salinity (S) and the like on 4 distribution points in the feeding area, the near bank area J and the central area Z, JZ of each experimental pond at the interval of about 15 days at the interval of 9:00-11:00, collecting water samples on the surface layer and the bottom layer of the aquaculture water body by using a water sampler, and fully and uniformly mixing water samples obtained from the same pond, the same water layer and different distribution points to obtain a mixed water sample. Refer to ocean monitoring Standard and culture Water environmental chemistry experiment. Wherein the Dissolved Oxygen (DO) is obtained by using a portable dissolved oxygen instrument JENCO LD-900-X; pH, temperature (T) Portable pH meter and thermometer (Lancheng honesty Co., Ltd., Shenzhen) were used.

Examples

The experiment design and the experiment method are implemented, no pollution source exists in 3 kilometers around the culture area, the water source is sufficient, and the irrigation and drainage are convenient. The culture pond is in a connected prawn culture area, the area is 10 mu/prawn, the water injection depth is 1.8-2.0m, the pond shape is rectangular, the pond is provided with an independent water inlet and drainage system, a water inlet is arranged on a pond dam, a water outlet is arranged in the middle of the pond bottom, and the pond bottom is flat and shaped like a pot bottom. The oxygen increasing device adopts an HDSR50-350 fish-culturing oxygen increasing machine in Shandong east China, and one oxygen increasing machine is arranged in each pond, wherein the oxygen increasing machine is used from 7 months, and is started up for two hours at noon every day, and the starting up time of each pond is kept consistent.

And (4) sunning the pond in spring, thoroughly draining residual water, fishing the sludge in the circular ditch, and fully ploughing and solarizing the bottom beach surface of the pond. One month before the golden pomfret is put in the fry, water is fed, and 10-15 kg of bleaching powder is uniformly sprayed to the bottom of the pond by pulping per 667 square meters.

15 days before the seedlings are put, mulberry twigs (willow twigs for short) are paved at the bottom of the pond, the mulberry twigs are purchased from farmers in Huzhou city of Zhejiang province, cut down in winter and bundled into 10kg bundles, the bundling ropes are nylon ropes or rubber ropes which are not easy to rot and dissolve, and the bundled mulberry twigs can be randomly placed at the bottom of the pond or can be arranged at the bottom of the pond according to a certain rule, and are preferably arranged in a dispersed manner according to a certain rule. In order to prevent the mulberry branches from moving during irrigation, the mulberry branches can be fixed by a heavy object such as a stone or an iron block, and 5kg of bricks are adopted in the embodiment to be connected together to be placed at the bottom of the pond. In this example, 50 bundles of 10kg of mulberry branches were placed in a 10-mu pond, and in the comparative example, the same number of willow branches purchased from rural areas in shaoxing city were placed. The mulberry branches and the willow branches are not sprayed with pesticide for more than 2 months in winter.

After the branches are paved, filtering water inflow by using a silk bag with a mesh of 80 meshes, wherein the water inflow is 100cm, applying nitrogen phosphate fertilizer and biological fertilizer in the morning on a sunny day, and culturing the pond water into yellow green or light brown, wherein the dosage of the nitrogen fertilizer is 2kg, 5kg of the phosphate fertilizer and 2kg of the biological fertilizer per 667 square meter.

And 5, putting the penaeus vannamei boone larvae in 21 days in 5 months, wherein the body length of the penaeus vannamei boone is 1.2 cm. And 3 days after 6 months, putting golden pomfret fry with the fry specification of about 5 cm/tail. The water quality data was measured starting at 6 months and 1 day, once every 10 days.

As a result: the Dissolved Oxygen (DO) change range of the three groups of ponds is between 4mg/L and 6.5mg/L, and the culture requirements of golden pompano and south America white shrimps are basically met. From the results of fig. 1 to 3, it was revealed that there was no significant difference between the experimental groups, but the dissolved oxygen was significantly higher in the pond in which the bottom of the pond was paved with the ramulus mori of the present invention than in the other groups, probably because the components in the ramulus mori had an influence on the microorganisms in the water environment, helping to increase the content of the dissolved oxygen. Especially in the seasons with the highest temperature in 7 and 8 months, the method of the invention still keeps higher dissolved oxygen concentration in the pond using the mulberry twigs, thereby improving the survival rate and the growth speed of the golden pomfret and the penaeus vannamei boone. In addition, the pH value of each pond during the test period is 8-8.3, the service between each group is obviously different, and the slightly alkaline water quality also meets the growth requirements of golden pompano and litopenaeus vannamei. The water temperature is within the normal culture demand range, and data statistics are omitted.

Finally, according to the number of dead fish tails of golden pomfret during the culture period, the survival rate of golden pomfret is counted, and the statistical results of the finally harvested golden pomfret and penaeus vannamei boone are shown in table 3.

TABLE 3 survival rate of golden pomfret and yield of golden pomfret and Penaeus vannamei Boone

As can be seen from table 3, the survival rate of golden pomfret is significantly higher than that of other culture ponds without bottom-laying ramulus mori or those prepared by bottom-laying ramulus Salicis Babylonicae in the embodiment of the present invention using the culture pond with bottom-laying ramulus Mori. The golden pomfret products and the penaeus vannamei boone products of the culture pond with the bottom paved with the mulberry branches in each group are also obviously higher than those of other ponds in the same group. The inventor believes that the special components of the mulberry twig can improve water environment microorganisms and improve the content of dissolved oxygen, so that the yield of the golden pomfret and the penaeus vannamei boone is improved, and in addition, the special components of the mulberry twig can directly improve the disease resistance of the golden pomfret and the penaeus vannamei boone. It has been reported that the disease resistance of fishes and shrimps is improved by pulverizing ramulus mori or mulberry leaves and mixing them with aquaculture feed, and using the effective components in the mulberry tree, but the inventors of the present invention have made a first attempt to directly lay the ramulus mori at the bottom of a pond, and have achieved unexpected effects. The mulberry branches are directly paved at the bottom of the culture pond, so that the method is simple and efficient, and the production cost is saved. When the mulberry twig and mulberry twig compound feed additive is directly used as a feed additive for fishes and shrimps, the fishes and shrimps have the trouble of rejection reaction, but the mulberry twig and mulberry twig compound feed additive is paved at the bottom of a culture pond, so that the effective components of the mulberry twig indirectly help to improve the culture yield, and a remarkable effect is brought to the income increase of farmers.

Claims

1. A ecological polyculture mode of Penaeus vannamei Boone and golden pompano is characterized in that:

has a culture pond capable of injecting water of 1.8-2.0m, the area of the culture pond is more than 3 mu,

the culture pond is provided with an independent water inlet and outlet system,

thoroughly draining the culture pond before culture, fishing the sludge in the annular groove, fully ploughing the bottom surface of the pond and solarizing,

water is fed into the golden pomfret one month before the golden pomfret is put in the fry, bleaching powder is used for pulping and evenly sprinkling the bottom of the pond,

15 days before the seedlings are put, mulberry twigs are paved at the bottom of the pond and are immersed at the bottom of the pond, the mulberry twigs are felled in winter,

the litopenaeus vannamei and the golden pompano are polycultured in the ecological polyculture mode,

wherein, the golden pomfret accounts for 500 to 1,500 tails/mu; 10,000 to 20,000 penaeus vannamei boone/mu.

2. The ecological polyculture mode of claim 1,

3. The ecological polyculture mode of claim 2, wherein,

the using amount of the mulberry twigs is more than 10 bundles per mu.