Fish farming and vegetable planting can be so beautiful
CCTV can grow fish
[science and technology park] fish farming and vegetable planting can be so beautiful (20140520)
Why do we plant vegetables on rocks? Why does the tide rise and fall from time to time? Why wrap the pool with black film? How to create a fish vegetable symbiosis system?
This technology mainly focuses on planting vegetables. The innovation lies in that both fish farming and vegetable planting are realized in the same greenhouse. The water used for fish culture is recycled and used to water vegetables. The vegetables grow in the substrate, and the substrate can filter the feces of fish. In this way, fish feces become fertilizer for vegetables. What's not used in the pond is also recycled. Vegetables grow well, do not need to fertilize, do not water, to the maximum extent of saving labor, usually as long as planted, sit and wait for harvest. In this way, in the harvest of vegetables at the same time can also part of the income of fish. This fish vegetable symbiosis technology can achieve stable and high yield of vegetables, and can harvest 50000 Jin of green leafy vegetables every year.
The cultivation of green vegetables is to adopt comprehensive technical measures and give priority to prevention, create ecological conditions conducive to the growth of vegetables but not conducive to the occurrence of diseases and insect pests, scientifically select chemical pesticides with high efficiency, low toxicity and low residue, so as to make the pesticide residues in vegetables lower than the national standards. In the process of cultivation, the following five measures must be taken.
1、 Good seed control: to select high-quality, high-yield, disease and pest resistant vegetable varieties.
2、 Good preparation before sowing: 1. Before sowing, plough as soon as possible, expose the soil, remove the residual stubble, branches and leaves, and eliminate the residual bacteria and insect sources in the soil. 2. Do a good job in seed treatment: select warm water to soak seeds, that is, use 55 degrees of warm water, soak for 15 minutes, can kill the bacteria attached to the seed surface.
3、 Good cultivation management: strengthen management, and time seedlings, weeding, weeding, remove disease, control the spread of diseases and insect pests.
4、 Good fertilizer: 1, the base fertilizer should be mainly organic fertilizer, and should be fully decomposed, in order to reduce the introduction of pathogenic bacteria and eggs. 2. Top dressing should be based on rotten manure and urine, supplemented by multi-element compound fertilizer, so as to prevent excessive topdressing leading to overgrowth [HTTPS: / / www.nczfj. COM /]. Fertilizers such as urea and diammonium phosphate should be discontinued 15 days before harvest. 3. Rational use of hormones and trace elements, in strict accordance with the label instructions to use the concentration and dose, to prevent excessive drug damage.
5、 Take good precautions. In terms of prevention and control, we should take the physical method as the basis, biological pesticides should take the lead, local pesticides should play a supporting role, chemical pesticides with high efficiency and low toxicity should not be used in the field
1. Physical method was used to kill insects. Non pollution insecticide yellow tablets, using aphids, whitefly, Liriomyza tabaci and other adult insects sensitive to yellow, has a strong yellow tendency, through the use of this special yellow with special viscose, to achieve the trapping and killing of pests.
2. Biological pesticides and plant pesticides should be used as much as possible. BT emulsion was used to control Pieris rapae and Plutella xylostella; agricultural streptomycin was used to control bacterial angular leaf spot, soft rot and black rot of Chinese cabbage; jingfengmycin was used to control damping off and root rot; et-107 was used to control aphid.
3. Scientific use of chemical pesticides. We must conscientiously implement the "pesticide management regulations" and the "pesticide safety interval provisions", and prohibit the use of highly toxic and high residue pesticides such as DDT, methamidophos, methyl isosalix.
In the process of pond fish culture, "three points of stocking, seven points of management", the daily management work is always throughout the whole process of fish culture, which is the key to ensure the increase of fish production and income. First, the pond should be early management. In order to achieve this "three early", we must make unified arrangements before the winter fishing. The fishpond area adopts the side net to catch and dry the pool, while the clear pond repairs the pond plant In order to meet the "three early" requirements, we should put water into the fish, feed and fertilize the fish, alternately operate in turn between the ponds in a planned way, and fasten the rings in order. 2. Four look: fish, water color, weather and season. According to the first-hand information obtained from the fourth look, the pond managers should flexibly adjust the quantity, type and feeding method of baiting and fertilization every day. 3. Five prevention: prevention of fish disease (drug prevention and control of fish disease should be done regularly), floating head prevention, flood prevention, damage prevention (security work), and industrial wastewater pollution prevention. 4. Sixth, frequently patrol the pond: patrol the pond three times in the morning, in the middle and in the evening, and keep abreast of the fish dynamics and water quality changes at any time, and take immediate measures if problems are found. If the weather is changeable in summer, patrol the pond at night to prevent accidents. Frequent inspection: check the situation of the pond every day, especially the food farm, master the feeding effect, and strive to achieve the appropriate amount of bait and fertilization, timely frequency and palatability of bait according to different water color. Frequently do cleaning and sanitation work: timely remove the residues, grass stems, sick and dead fish in the pool, and keep the water fresh. Frequent maintenance: the fish pond and various tools and fishing machines should be carefully used and operated, frequently maintained and managed, and repaired by themselves. Record frequently: keep the original record of the fish pond carefully. Frequent research: according to the fish pond stocking, water color, food, rotation, disease prevention and other conditions, the growth situation of fish between the pond and the pond was analyzed frequently, and the measures for increasing production were studied.
High yield and high efficiency fish culture techniques in small reservoirs: 1. The reservoir should be located in the leeward and sunny place. The dam and the bottom of the reservoir should be watertight. The spillway and drainage pipe should be set with fish bars or fish nets to remove the trees and stumps at the bottom of the reservoir. If the conflict between agriculture and fish may occur, the lowest water level line for fish protection should be determined and the roads should be connected with electricity. 2. Store water as soon as possible. The water source of the reservoir is mainly from rain water, so it is necessary to plug the pipe as soon as possible to ensure that there is enough water for fish breeding no later than the end of March. 3. Apply base fertilizer. Fertilization should not pollute water quality. Before stocking fish seeds, 200-400 kg of organic fertilizer should be put into livestock and poultry per mu. The dry pond is piled up in the shallow water of the slope at the bottom of the reservoir to ferment, so that the fertilizer and water can be diffused freely; for the impounded reservoir, several small soil ponds are dug to pile up organic fertilizer for fermentation and then applied; the organic fertilizer after fermentation can be directly poured into the reservoir. It is better to apply base fertilizer before disinfection. 4. The seeds should be planted in time. The Spring Festival is the best season for fish breeding in the reservoir. Therefore, the water level of the reservoir is small, the water temperature is low, and the fish scale is tight, which is convenient for fishing operation and transportation. The fish species are not easy to be injured and infected, and the survival rate of the culture is high. The key to high yield of fish culture in reservoir is to put in large scale, multi species and enough high quality fish species. The size of black carp, silver carp and spotted silver carp is more than 9 fish / kg, and that of crucian carp and bream is more than 15 fish / kg. In order to eliminate wild fish, 80 perch were raised per mu. The stocking amount of fish seeds should be determined according to the reservoir conditions, but not more than the bearing capacity of the water body, and the close cultivation should be reasonable. The fish species should be released at one time, generally 500-800 per mu. 5. Apply fertilizer skillfully. From April to October, organic fertilizer should not be applied as far as possible to reduce the occurrence of fish disease. The inorganic fertilizer should be ammonium bicarbonate and superphosphate. The amount of fertilizer should be 3kg / mu, once every 15 days. According to the water quality, weather and water temperature, the water should be in the form of tea brown, grass-green, yellow or sauce red, with significant changes in water color in the morning, middle and evening, and the transparency is maintained About 40 cm. Topdressing should avoid rainstorm time, so as to avoid waste of fertilizer and water along with flood loss. 6. Scientific bait. In the spring and late seasons, the main idea is to feed the fish in the early and late seasons. In spring, fresh bait such as snails is put in one time, and 3000-5000 Jin snails are put into mu. In the early spring and late autumn, the feed was mainly composed of pellet feed or meal bait, which was fed once a day; from June to September, the bait was fed twice a day, once in the morning and afternoon respectively, with grass feed first and then with compound feed or meal feed. At the same time, according to the "four fixed" (qualitative, quantitative, timing, positioning) method of "three look" (depending on the weather, water quality, watching the fish feeding) method operation. 7. Quicklime is used to transfer water. The muddy water of fish culture in the new reservoir is turbid, which affects the respiration of fish and the reproduction of plankton. Sprinkling secondary lime every 20-30 days has a good effect of settling mud and water and preventing fish diseases. The dosage is 20-30 kg / mu, and water is sprayed over the water surface. 8. Improve the environment. When the water level of the reservoir gradually decreases, the fluctuating area of the reservoir can be fully utilized. When the water level drops, some seeds are sown, mainly ryegrass. It can also be used on dam surface, slope and hillside on both sides plant Ryegrass and sudangrass can not only feed fish as green fodder, but also prevent the soil from being washed into the reservoir by rainwater and cause turbidity. 9. Reduce net pulling. Trawling operation is very easy to make the bottom mud float up and cause water turbidity, so it should not be trawled as far as possible. If it is necessary to trawl, it is better to select the net with less sink. 10. To do a good job in the prevention and control of fish diseases, adhere to the principle of "prevention first, prevention more important than treatment". The fingerling should be disinfected when stocking. The fingerling should be washed with 4% salt water for 15 minutes, and regularly sprayed with trichloroisocyanuric acid, dibromohydrin and other drugs near the food court. Lime should be frequently applied to improve the pH value, promote the material circulation of water body and improve the water quality, which is conducive to the growth of fish and the occurrence of fish diseases. Generally, 20 kg / mu is used for each time, and the whole reservoir is sprinkled with water every 20-30 days Right once. When fish disease is found, it is necessary to apply the medicine to the case in time and treat it. It is forbidden to use prohibited drugs. When using drugs, attention should be paid to the instructions for drug use to prevent drug damage and economic loss.