CN106172190A - A kind of environmentally friendly pond Trionyx sinensis Wiegmann dish rice composite highly effective kind breeding method - Google Patents

Abstract

The invention discloses an environment-friendly compound high-efficiency planting method of soft-shelled turtle-vegetable-rice in ponds. The invention is based on circular economics and ecological principles, combined with the characteristics of nutrition, physiology and environmental adaptability of soft-shelled turtles, aquatic vegetables and rice. Without occupying additional land resources, the two completely different agricultural production technologies of soft-shelled turtle breeding and aquatic vegetable and rice planting have achieved mutual benefit and symbiosis through ingenious ecological design, realizing efficient use of breeding pond space, significantly improving economic benefits, The breeding environment has been significantly improved and the quality assurance of aquatic products has been coordinated and unified. The planting and breeding parameters of Chinese soft-shelled turtle, aquatic vegetables and rice in this method are proposed based on comparative experiments, which can realize the normal growth of the three and obtain better economic benefits. At the same time, aquatic vegetables and rice can purify the water quality, reduce the nutrient load of the water body, regulate the high temperature of the water body, and improve the breeding environment, thereby reducing the frequency of water changes and ensuring the quality and safety of aquatic products.

Description

An environment-friendly pond turtle-vegetable-rice compound high-efficiency planting method

technical field

The invention belongs to the technical field of aquaculture, and in particular relates to an environment-friendly pond turtle-vegetable-rice compound high-efficiency breeding method.

Background technique

Soft shelled turtle, commonly known as soft-shelled turtle, water fish, turtle and tortoise, etc., is an oviparous reptile that lives amphibiously on land and water. It is an important aquaculture species in my country. Because of its delicious meat, rich nutrition, high edible and medicinal value, it is very popular among consumers. In recent decades, due to overfishing, deterioration of the living environment, and loss of habitat habitat, the wild natural population of soft-shelled turtles has shown a sharp decline. In order to meet the growing dietary needs of the common people, artificial breeding of soft-shelled turtles has developed rapidly in the past two decades.

At present, my country's soft-shelled turtle breeding mainly adopts two methods: greenhouse and pond culture. Compared with greenhouse culture, the pond culture environment is closer to the natural state. Although the growth is slower, the survival rate is relatively high and the quality is relatively good, which is more popular among ordinary people. At present, the traditional culture mode of soft-shelled turtles in ponds is a culture production mode in which high-density, large-scale baiting and fertilization are used to obtain high yields. There are the following main problems in the traditional cultivation method of pond turtles with high density, high bait feeding rate and high water exchange rate: 1) the survival rate is low, the breeding cost is high, the breeding space is fully utilized, and the comprehensive economic benefit is low; 2) breeding The environment is poor, there are many diseases in the breeding species, and the fishery medicine is frequently used, so it is difficult to guarantee the quality and safety of aquatic products; 3) The amount of water exchange is large, and the waste of water resources is serious; 4) The nutrient load of the breeding water is high, and the arbitrary discharge of breeding wastewater has a negative serious pollution. The environment and product quality and safety of soft-shelled turtle breeding in ponds have become an important bottleneck restricting the sustainable development of soft-shelled turtle breeding industry in my country. Therefore, environmentally friendly pond soft-shelled turtle breeding technology is particularly important.

With the limitation of limited water and land resources and the country's further strengthening of environmental protection work, water exchange in ponds and accumulation of pond silt will also be restricted in the future. To improve water quality and sediment conditions by changing water and dredging, at the cost of polluting the environment, it will be difficult to maintain a production method that simply pursues high density and high output; Quality requirements are also increasing, and aquatic products whose quality and safety cannot be guaranteed will be eliminated by the market. Therefore, it is necessary to construct an environment-friendly and resource-saving modern efficient green aquaculture technology model.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages and deficiencies of the prior art, and provide an environmentally friendly pond turtle-vegetable-rice compound high-efficiency planting and breeding method, which saves energy, reduces emissions, reduces environmental pollution, and has remarkable ecological benefits.

In order to solve the problems referred to above, the technical scheme that the present invention takes is:

An environment-friendly pond turtle-vegetable-rice composite high-efficiency planting method, comprising:

(1) Pond selection and transformation

The area of a single pond is 3 to 6 mu, the depth of the pond is 1.5 to 1.8 meters, the slope of the pond bank is 1:2, the bottom of the pond is flat, and the silt is about 20 to 30 centimeters. An anti-escape wall is built around the pond, the wall height is 40-60 cm, the top of the wall is 10-15 cm inward, and the inner wall is smooth. Every 2 to 3 mu, use bamboo curtains or planks to set up a food table in or around the pool for soft-shelled turtles to eat and bask in their backs. Dry the pond before putting the seedlings, and thoroughly disinfect the pond with quicklime.

The pond is leeward and sunny, with sufficient water source, convenient drainage, irrigation and transportation, and a quiet environment.

(2) Turtle stocking

Select healthy and strong soft-shelled turtle seedlings in the middle and late May, and stock 200 and 500 young soft-shelled turtles with a weight of 400-500g and 80-120g per mu respectively; each pond is required to be released separately for male and female individuals, and the seedlings should be treated with drugs before release. Soak and disinfect for 10-15 minutes.

The medicine for soaking and disinfecting is 2%-4% salt solution, 2%-3% povidone-iodine solution or 20-40mg/L potassium permanganate solution, choose one of them .

(3) Planting of aquatic vegetables

Aquatic vegetable floating beds are set up around the pond. The covered area of the floating beds accounts for 10% to 20% of the pond area. The aquatic vegetable varieties are selected for alternate planting according to seasonal changes. After the vegetables are completely covered with the floating beds, the vegetables are picked regularly.

The aquatic vegetable varieties include watercress and watercress grown in summer and autumn, and watercress and watercress grown in winter and spring, which are planted in rotation during the breeding cycle; the planting density of watercress is 25-30 plants/m ² , and the planting density of watercress and watercress 30-40 plants/m ² .

(4) Rice cultivation

Deep-water rice suitable for pond growth is planted in the central area of the pond. The rice planting area accounts for 30% to 50% of the pond area. The pond water level is adjusted according to the rice growth, and the rice is harvested after it matures.

The preferred variety of the deep-water rice is pond rice, which is planted in wide and narrow rows with a row spacing of 60-70 cm and a plant-to-plant spacing of 40-50 cm. (5) Daily management

5.1 Water quality management: maintain the water level at 40-60 cm in the initial stage, gradually increase the water level with the increase of water temperature and the growth of rice, and add enough water level in high temperature in summer. Add water once every 10-15 days in spring and autumn, and once a week in summer, 20-30 cm each time. The water was not changed during the breeding process. Use EM bacteria liquid every 15-20 days in the summer high temperature season, the dosage is 1-2 kg/mu per meter of water depth, dilute with water and sprinkle the whole pool.

5.2 Feeding management: The principle of using fresh fish or chilled fish as the main ingredient, supplemented by compound feed, fresh fish or chilled fish accounted for 70% to 80%, and compound feed accounted for 20% to 30%. Feed twice a day on a fixed food table, feed compound feed at 8-9 am, and feed fresh fish or iced fish at 5 pm; feed with full food every day, and the amount of feeding should be eaten within two hours. should.

5.3 Pest control: Sprinkle quicklime in the turtle pond every 20 to 30 days, the dosage is 15 to 20 kg/mu per meter of water depth, and use it after diluting with water; clean the food table with a brush every morning and then expose it to the sun for disinfection, and use the table every week Potassium permanganate water disinfection once. In order to control rice pests, a 25-watt solar insecticidal lamp is installed at a corner of each pond 50-100 cm away from the shore, and the pests trapped by the insecticidal lamp are used as animal bait for soft-shelled turtles to eat.

5.4 Anti-escape and pond patrol: Carry out anti-escape and pond patrol for soft-shelled turtles in a conventional manner.

In the scheme described above, preferably, in step 5.4, the steps of preventing escape and patrolling the pond include: building an escape wall around the pond, setting an escape net at the water inlet and outlet of the pond to prevent turtles from escaping and foreign natural enemies from invading . Patrol twice a day in the morning and evening to check the anti-escape facilities in detail, and repair them in time if there is any damage to ensure that the facilities are complete and safe. Observe the water quality, if there is an abnormal change in the water quality, analyze the cause and take adjustment and improvement measures. Observe the growth of the food, if there is a sudden change in the food intake, find the factors and adjust the feeding amount and measures. Do a good job in cleaning and sanitation, and remove the residue and bait in the pool in time. As the water level increases, adjust the height of the dining table in time. During the flood season, prevent flooding and escape work in advance, and strengthen security protection against theft.

In the scheme described above, in step (1), the material for building the escape wall is cement board, aluminum board, color steel plate or asbestos tile.

In the scheme described above, in step (3), the width of the floating bed of aquatic vegetables is 1.5-2.0m, and the frame of the floating bed is constructed with bamboo poles or PVC pipes, and the two sides of the frame are respectively covered with polyethylene mesh sheets with a mesh size of 1-2cm and 3-4cm. , when the floating bed is set, one side of the small mesh is facing down.

Compared with the prior art, the present invention has the following advantages:

Through the reasonable layout of the pond space for turtle breeding, the floating bed is set on the water surface to cultivate economic crops aquatic vegetables, the turtles are raised in the water, and the rice is planted underwater, which realizes the full use of the pond water space and improves the comprehensive economic benefits of the breeding water; at the same time, aquatic vegetables and rice Absorb the nitrogen and phosphorus nutrients in the water quality and the bottom, improve the breeding environment, not only reduce the frequency of water changes, save water resources, reduce the pollution of the surrounding environment caused by the breeding wastewater, but also reduce the probability of disease occurrence, reduce the use of fishing medicines, and ensure the quality of aquatic products .

Based on the principles of circular economics and ecology, the present invention combines the nutritional physiology and environmental adaptability characteristics of Chinese soft-shelled turtle, aquatic vegetables and rice, and cultivates Chinese soft-shelled turtle and aquatic vegetables and rice without additional occupation of land resources. This completely different agricultural production technology achieves mutual benefit and symbiosis through ingenious ecological design, realizing the coordination and unity of efficient use of breeding pond space, significant increase in economic benefits, significant improvement of breeding environment, and quality assurance of aquatic products. This technical method can effectively improve the utilization rate of land and water, and belongs to the win-win mode of "not competing for land with grain, not competing with fish for water"; It can purify water quality, improve planting and breeding environment, suppress diseases, insect pests and weeds, and promote the growth of planting and breeding organisms; at the same time, to a certain extent, it can replace and reduce the use of chemical fertilizers and pesticides, ensure the quality and safety of planting and breeding organisms, save energy and reduce costs. discharge, reduce environmental pollution, and have remarkable ecological benefits.

The present invention has been tested in the Laowan Turtle Breeding Base of Honghu City, Hubei Province. From the actual effect of the three years from 2013 to 2015, the compound breeding technology model of "turtle-aquatic vegetables-rice" in ponds and the traditional breeding technology of turtles in ponds have been tested. Compared with the model, the survival rate of soft-shelled turtles is increased, the quality of soft-shelled turtles is better, and the comprehensive economic benefits are significantly improved; the nitrogen and phosphorus nutrient content of the water body is significantly reduced, the frequency of water changes is reduced, the breeding environment is significantly improved, the breeding pollution is reduced, and the environmental benefits are obvious. In terms of comprehensive economic benefits, the net income per unit area under this technology model is 2.99 times that of the traditional farming model; in terms of environmental benefits, the total nitrogen and total phosphorus contents of the water body under this technology model are respectively 36.9% and 36.9% lower than those of the traditional farming technology model. 46.8%.

detailed description

The present invention is described in further detail below through the examples, the following examples are explanations of the present invention and the present invention is not limited to the following examples. The technical solutions described in the present invention are conventional solutions in the art unless otherwise specified.

Example 1:

In the embodiment of the present invention, a comparative test was carried out at the turtle breeding base in Laowan, Honghu, by comparing the high-efficiency cultivation method of "turtle-vegetable-rice" in ponds provided by the present invention with the traditional single-culture mode of soft-shelled turtles in ponds.

Each model selects 3 ponds with equal area (ie 3 repetitions), each pond covers an area of 4.5 mu, the pond depth is 1.6 meters, the slope of the pond bank is 1:2, the bottom of the pond is flat, and the silt is 25 centimeters. There was no significant difference in the water quality of the two modes at the beginning of the experiment, and the water was not changed during the experiment.

The traditional monoculture mode of soft-shelled turtles in the pond is that only soft-shelled turtles are raised in the pond, and "vegetables" and "rice" are not planted. The remaining conditions, parameters and steps are the same as the "soft-shelled turtle-vegetable-rice" compound high-efficiency planting method provided by the present invention. Significant differences.

After the test started, the water quality of the compound planting ponds and monoculture ponds was regularly measured every month. The measurement indicators included water temperature, dissolved oxygen, pH value, conductivity, turbidity, total nitrogen, ammonia nitrogen, total phosphorus, potassium permanganate index, chlorophyll a content. After the aquatic vegetables are cultivated, they are picked regularly according to the growth conditions, weighed and recorded. In the pre-sale stage of soft-shelled turtles, 30 soft-shelled soft-shelled turtles were randomly caught for each pattern, and the fish quality of appearance, fat, total mercury, lead, cadmium, copper, chromium, inorganic arsenic, and oxytetracycline, tetracycline, chloramphenicol, sulfonamides, furazolidone, etc. Drug residue indicators were measured.

An environment-friendly pond turtle-vegetable-rice composite high-efficiency planting method, comprising:

(1) Pond selection and transformation

Turtle ponds are selected to be planted in ponds with leeward sunshine, sufficient water sources, convenient drainage, irrigation and transportation, and a quiet environment.

The area of a single pond is 4.5 mu, the depth of the pond is 1.6 meters, the slope of the pond bank is 1:2, the bottom of the pond is flat, and the silt is 25 centimeters;

Build an anti-escape wall with asbestos tiles around the pond at a distance of 50 cm from the shore. The asbestos tile wall is inserted into the pool ridge 20 cm, the height of the anti-escape wall is 45 cm, the top of the wall is 10 cm inward, and the plastic cover is eaves. The inner wall is smooth to prevent turtles from escaping and predators from entering.

Use bamboo curtains to set up food tables around the pond for soft-shelled turtles to eat and bask in. The food table is 200 cm long, and one side extends to 30 cm below the water surface. The number of food tables is set according to the size of the pond, and one is set every 2 mu.

Drain the pond water in winter, remove weeds and sundries, and dry the pond; before releasing seedlings, use 100 kg of quicklime per mu to spray the whole pond for thorough cleaning and disinfection;

(2) Turtle stocking

Soft-shelled soft-shelled turtle seedlings (Chinese soft-shelled turtle) are stocked in late May. The seedlings are required to be in good shape, thick skirt, lively and robust, free of injury and disease, and come from provincial-level or above fine-bred farms or original seed farms. The stocking density is: 200 young soft-shelled turtles weighing 400g and 500 young soft-shelled turtles weighing 100g per mu.

Mutual bites often occur in the breeding process of soft-shelled turtles, especially when the soft-shelled turtle enters the breeding season after adulthood, this phenomenon is more serious. Therefore, the male and female individuals are separated before stocking and cultured in different pond mouths. Before the turtle seedlings are put into the pond, soak and disinfect the seedlings with 30 mg/L potassium permanganate solution for 15 minutes.

(3) Planting of aquatic vegetables

Aquatic vegetable floating beds are set up around the pond at a distance of 50 cm from the shore. The width of the floating bed is 1.5 m. The frame of the floating bed is constructed with bamboo poles or PVC pipes. The two sides of the frame are covered with polyethylene mesh with a mesh size of 2 cm and 4 cm respectively. Mesh side down. The floating bed covers an area of 15% of the pond area. According to seasonal changes, select suitable aquatic vegetable varieties for alternate planting. Water spinach is planted from June to October. The planting density of water spinach is 25 plants/m ² , and it is planted from November to April of the next year. Watercress and watercress, the planting density of watercress and watercress is 40 plants/m ² .

Harvest and organize sales in time according to the growth status of vegetables. No chemical fertilizers and pesticides are used in the vegetable growing process.

(4) Rice cultivation

Rice was planted in the central area of the pond in early May, and the rice planting area accounted for 40% of the pond area. When planting, arrange wide and narrow rows with a row spacing of 60cm and a plant spacing of 40cm. This distance is conducive to the growth of rice and sufficient sunlight in the water in the paddy field planting area, and it is also convenient for soft-shelled turtles to walk through the rice and forage for pests. After the rice is planted, adjust the water level of the pond according to its growth conditions, and keep the water depth not lower than 40 cm before the turtle seedlings are put in. Compared with the paddy field, the water depth of the pond is significantly improved, so it is necessary to select deep-water pond rice suitable for pond planting. In this example, reed rice is used.

Rice cultivation does not use chemical fertilizers and pesticides. After the rice is mature, the water level is appropriately lowered to harvest it in time.

(5) Daily management

5.1 Water quality management: Keep the water level at 50 cm in early June, gradually increase the water level with the increase of water temperature and the growth of rice, and increase the water level to 1.2 meters at high temperature in summer. Add water once every half a month in spring and autumn, and once a week in summer, 20-30 cm each time. The water was not changed during the breeding process. From June to September, use the EM bacterial solution every 20 days at a dosage of 1.5 kg/acre per meter of water depth, dilute it with water and sprinkle it over the whole pond.

5.2 Feeding management: the principle of using fresh and live fish as the main ingredient and supplementing compound feed as a supplement, fresh and live fish accounted for 75% (mass ratio), and compound feed accounted for 25%. Feed twice a day on a fixed food table, feed compound feed at 8-9 am, and feed fresh fish at 5 pm; feed every day with enough food, and the amount of feeding should be eaten within two hours.

5.3 Prevention and control of diseases and insect pests: Sprinkle quicklime in the turtle pond every 20 days, the dosage is 15 kg/mu per meter of water depth, dilute with water and sprinkle the whole pond; clean the table with a brush every morning and then expose it to the sun for disinfection, and use potassium permanganate every week The water is disinfected once. In order to prevent and control rice pests, a 25-watt solar insecticidal lamp is installed at a corner of each pond 50 cm away from the shore. The pests trapped by the insecticidal lamp are used as animal bait for soft-shelled turtles to eat.

5.4 Anti-escape and pond patrol: build anti-escape walls around the pond, and set up anti-escape nets at the water inlet and outlet of the pond to prevent turtles from escaping and foreign natural enemies from invading. Patrol twice a day in the morning and evening to check the anti-escape facilities in detail, and repair them in time if there is any damage to ensure that the facilities are complete and safe. Observe the water quality, if there is an abnormal change in the water quality, analyze the cause and take adjustment and improvement measures. Observe the growth of the food, if there is a sudden change in the food intake, find the factors and adjust the feeding amount and measures. Do a good job in cleaning and sanitation, and remove the residue and bait in the pool in time. As the water level increases, adjust the height of the dining table in time. During the flood season, prevent flooding and escape work in advance, and strengthen security protection against theft.

The experimental results are as follows:

Improvement of pond water quality by compound high-efficiency planting of "soft-shelled turtle-vegetable-rice"

At the end of the breeding test cycle (period in this embodiment is May 2013-April 2014), the pond water quality of the "soft-shelled turtle-vegetable-rice" compound planting model and the soft-shelled turtle single-culture model was compared (Table 1 ). Planting aquatic vegetables and rice in turtle ponds can significantly improve water quality. Compared with the monoculture mode, the total nitrogen and total phosphorus content of the water body are reduced by 36.9% and 46.8%, respectively, and the turbidity and chlorophyll a content are significantly reduced under the technical mode; the difference in other indicators is not significant. This shows that the growth of aquatic vegetables and rice absorbed the nitrogen and phosphorus nutrients in the water body, reduced the nitrogen and phosphorus nutrient load, purified the water quality, and improved the breeding environment.

Table 1 Comparison of pond water quality between "soft-shelled turtle-vegetable-rice" multi-planting model and soft-shelled turtle single-culture model

Effects of "soft-shelled turtle-vegetable-rice" compound high-efficiency planting on comprehensive benefits of ponds

The comprehensive benefits of the "soft-shelled turtle-vegetable-rice" compound cultivation mode and the single-culture mode of soft-shelled turtle were compared (Table 2). Planting aquatic vegetables and rice in the turtle pond can significantly improve the comprehensive economic benefits of the pond. The annual net income per mu under this technical model is 2.99 times that of the traditional single-culture model. The cultivation of aquatic vegetables and rice can improve the breeding environment, thereby increasing the survival rate of soft-shelled turtles, thereby increasing the yield and quality of soft-shelled turtles; at the same time, aquatic vegetables and rice can generate considerable added value, and their income accounts for about 10% of the total income, while Its cost expenditure accounts for only 3.74% of the total cost, and the net income generated by the two accounts for 28.1% of the total net income.

Table 2 Comparison of comprehensive benefits between the "soft-shelled turtle-vegetable-rice" multi-planting model and the single-culture model of soft-shelled turtle (unit: yuan/mu)

Determination index "Turtle-vegetable-rice" compound planting model Soft-shelled turtle Total revenue 39340 28400 turtle income 35420 28800 Vegetable income 3200 0 rice income 720 0 total expenses 29268 25434 Soft-shelled turtle seed expenditure 15600 15600 Vegetable expenditure 480 0 Rice seedling expenditure 240 0 River fresh bait expenditure 6921 5463 Compound Feed Expenditure 2392 1821 Floating bed making expenses 375 0 other expenses 3270 2550 net income 10072 3366

Effects of "soft-shelled turtle-vegetable-rice" compound high-efficiency breeding on quality and safety of soft-shelled turtle

The quality and safety of soft-shelled turtles under the "soft-shelled turtle-vegetable-rice" compound cultivation mode and the single-culture mode of soft-shelled turtle were compared. Compared with the single-culture mode, the carapace of the soft-shelled turtle under this technology mode is smoother and more lustrous, and the skirt is more complete and relatively thick. After dissection, it is found that the fat content is relatively less and the color is brighter, and the overall quality is significantly improved. In terms of fishery medicine and toxic and harmful substance residues, the content of each monitoring index under the two modes meets the quality and safety standards of pollution-free aquatic products, oxytetracycline, tetracycline, chloramphenicol, sulfonamides, furazolidone, total mercury, cadmium, inorganic arsenic None were detected; the content of heavy metals such as lead, copper and chromium in the mode provided by the present invention is significantly lower than that in the monoculture mode, and the quality and safety of aquatic products is further improved (Table 3).

Table 3 Heavy metal content in soft-shelled turtle muscle under the "soft-shelled turtle-vegetable-rice" multi-planting model and the soft-shelled turtle single-culture model.

Determination index "Turtle-vegetable-rice" compound planting model Soft-shelled turtle Total Mercury (mg/kg) — — Lead (mg/kg) 0.034 0.045 Cadmium (mg/kg) — — Copper (mg/kg) 0.12 0.23 Chromium (mg/kg) 0.09 0.13 Inorganic arsenic (mg/kg) — —

Claims (4)

1. environmentally friendly pond Trionyx sinensis Wiegmann-dish-rice composite highly effective kind breeding method, including:

(1) pond selects and transformation

Single pond area 3～6 mu, the pond degree of depth 1.5～1.8 meters, pool bank slope degree 1: 2, smooth at the bottom of pond, mud 20～30 lis Rice；Pond surrounding is built and anti-is escaped wall, and wall is high 40～60 centimetres, and eaves 10～15 centimetres, inner wall smooth are inwardly walked in wall top；Every 2～3 mu With bamboo curtain splint or plank or food platform is set in pond week takes food for Trionyx sinensis Wiegmann and shine the back of the body in pond；Shine the pool before putting Seedling, and with quick lime, pond is entered Row thorough disinfection；

Described pond be leeward face south, have abundant water resources, irrigation and drainage and having a good transport service, the pond of environment quiet；

(2) Trionyx sinensis Wiegmann is put in a suitable place to breed

Mid or late May selects the young soft-shelled turtle kind that healthy body is strong, puts the young Trionyx sinensis Wiegmann that body weight is 400～500g and 80～120g respectively in a suitable place to breed for every mu 200 tails and 500 tails；Require that each pond male and female individuality is separately thrown in, throws in front medicine seed is embathed sterilize 10～ 15 minutes；

The described medicine embathing sterilization be concentration be the betagen solution of salt solution, 2%～3% of 2%～4% or 20～ The potassium permanganate solution of 40mg/L, optional one；

(3) aquatic vegetable plantation

Arranging aquatic vegetable floating bed in pond surrounding, floating bed area coverage accounts for the 10%～20% of pond area, according to seasonal variations Select aquatic vegetable kind alternately to plant, after vegetable is completely covered floating bed, periodically vegetable is plucked；

Described aquatic vegetable kind includes swamp cabbage and the Herba Oenanthes Javanicae of Winter-Spring growth, the Nasturtium officinale that Xia Qiu grows, in the culture-cycle Plant in turn；Swamp cabbage planting density 25～30 strains/m², Nasturtium officinale and Herba Oenanthes Javanicae planting density 30～40 strains/m²；

(4) Rice Cropping

Plant the deep water rice of suitable pond growth in central area, pond, Monitoring of Paddy Rice Plant Area accounts for the 30%～50% of pond area, Adjust pond water level according to paddy growth, after Oryza glutinosa maturation, it is gathered in；

The preferred kind of described deep water rice is pond rice, during plantation wide-and narrow-row arrange, line-spacing 60～70cm, spacing in the rows 40～ 50cm；

(5) daily management

5.1 water quality managements: initial stage holding water level 40～60 centimetres, along with water is progressively increased in the growth with Oryza sativa L. that improves of water temperature Position, summer high temperature fills up water level；Spring and autumn 10～add water once in 15 days, one week summer added water once, each 20～30 centimetres；Support Water is not changed during growing；Every 15～20 days of season of summer high temperature uses an EM bacterium solution, consumption be every meter of depth of water 1～2 kilograms/ Mu, full pool spilling head after dilute with water；

5.2 throw something and feed management: it is main for using fresh and alive fish or chilled fish, and supplementary mixed feed is auxiliary principle, fresh and alive fish or chilled fish Accounting for 70%～80%, mixed feed accounts for 20%～30%；Every day throws something and feeds twice on fixing food platform, and cooperation of throwing something and feeding during the morning 8～9 is raised Material, throw something and feed during the afternoon 5 fresh and alive fish of fresh food or chilled fish；Being satiated with food every day and throw something and feed, feeding volume is advisable to eat up in two hours；

5.3 prevention and control of plant diseases, pest control a: quick lime of splashing in Trionyx sinensis Wiegmann pond for every 20～30 days, consumption be every meter of depth of water 15～20 kilograms/ Mu, uses after dilute with water；Every morning tans by the sun sterilization after cleaning food platform with hairbrush, and food platform is weekly with potassium permanganate water sterilization one Secondary；For preventing and treating rice grub, one jiao of offshore 50～100 centimeters in each pond arranges the solar insect-killing of 25 watts Lamp, the insect of trapping lamp trapping eats for Trionyx sinensis Wiegmann as animal bait；

5.4 prevent escaping and patrol the pool: carry out the anti-of Trionyx sinensis Wiegmann in the usual way and escape and patrol the pool.

Method the most according to claim 1, it is characterised in that: in step 5.4, prevent that the step escaping and patrolling the pool includes: in pond Pool surrounding is built and is prevented escaping wall, and water inlet and outlet in pond arrange and prevent escaping net, prevent Trionyx sinensis Wiegmann from escaping and external natural enemy invades；Often It patrols the pool, detailed inspection escaping-preventing facilities for twice sooner or later, repairs in time if any breakage, it is ensured that facility complete safety is without escaping；Observe water Matter, water quality has ANOMALOUS VARIATIONS, analyzes reason and takes regulation and ameliorative measure；Observing food growing state, general food amount has prominent The factor to be found become, adjusts quantity and the measure of throwing something and feeding；Do sanitation and hygiene well, remove residue and residual bait in pond in time；Along with water level Increase, in time regulation food platform height；Prevent escaping work whenever flood season carries out anti-flooding in advance, and strengthen anti-theft safeguard protection.

Method the most according to claim 1, it is characterised in that: in step (1), build the anti-material escaping wall be cement plate, Aluminium sheet, color steel or asbestos shingle.

Method the most according to claim 1, it is characterised in that: in step (3), aquatic vegetable floating bed width 1.5～2.0m, Building floating bed frame with bamboo pole or pvc pipe, it is 1～2cm and the polythene net of 3～4cm that framework two sides is covered each by mesh size Sheet, when floating bed is arranged, little mesh mesh sheet side is down.