First, field selection
Choose a field with sufficient water supply and water injection and drainage. Raise the field till it is 50 cm to 70 cm, and the width is 40 cm to 50 cm. Compact and compact. According to the size of the plot, dig a field-shaped fish ditch, open a horizontal ditch or vertical ditch every 15 to 20 meters, and dig a ditch 2 to 3 rows of hoe and white seedling outside the field ridge, depth and width 40 cm to 60 cm. Slip open at the intersection of fish ditch or near the water inlet, with an area of ​​2 square meters to 5 square meters, and a depth of 1.0 meters to 1.2 meters. Inlet and outlet installation net bar facilities, shrimp density of 6 mesh ~ 8 mesh; crabs in the field side of the inside with calcium plastic plate, asbestos tile, plastic film and other materials to build a 50 cm to 70 cm high escape wall; The screw is used to set a dense shed or dense mesh. After the paddy fields are ploughed, 50-75 kg of quick lime are sprayed and disinfected per mu (10 cm to 20 cm in water layer) to destroy the predators and wild fish.
Second, intercropping stocking
1. Cultivate fish species Each year, put 3 centimeters of summer flowers from 1000 to 1200 tails. After the fish can feed, feed the condiment once a day. Feed 1.0 kg to 2.5 kg per acre and add 10 kg of chopped water. If the water quality is relatively high, the pupa and squid are mainly used; the grass carp, which has more weeds, may account for more than 50% of the stocks of grass carp; the stocking of hybrid squid and allogynogenetic silver larvae is generally adopted, but the two fish cannot be mixed. Raise, only a single raise.
2. Adult fish rearing 15 centimeters to 20 centimeters of grass carp per mu, or 15 centimeters of carp, carp, or 7 centimeters to 10 centimeters of carp, carp, or 1300 to 1500 tails of 5 centimeters to 10 centimeters of carp; 3 centimeters of muddy , 8,000 to 10,000 tails per acre can be stocked; 50 grams of astragalus, 1300 to 1,500 tails per acre can be stocked.
3. Prawns and crabs are stocked with 0.2 kg to 0.5 kg of shrimp per mu, or 15,000 to 25,000 tails of green shrimp; 0.5 kg to 0.5 kg of five young crabs per acre; and 80 crabs per kg ~ 120 specifications of stocking 5 kg to 10 kg; fish and crab (shrimp) polyculture, large-scale species of 15 kg per acre stocking.
4. Spirocheir stocking should choose screw shell complete without breaking the screw species, generally in the main market for better marketing, higher price snail species, specifications for every 50 / kg to 80 / kg, acre stocking 7.5 kg to 15 kg The stocking time should be from March to April.
Third, intensive heavy tube
1. Water Management In the initial stage of stocking, the water depth is 10 cm to 15 cm. With the long white water, the seed grows and gradually adds water to maintain a water depth of 20 cm or more. During the summer, the water level should be deepened or the temperature should be changed.
2. Feeding and fertilizing Feeding concentrates according to the season, such as cakes, bean dregs, wheat bran, rice bran, alfalfa, fly maggots, fish pellets and other aquatic animals. Feeding amount is generally 5% to 10% of the body weight of fish and shrimp, and the “four-fixation†feeding method is adopted. Shrimp is matched with 50% of animal food such as bean cake, wheat bran 50%, and snail. Crab feeds should be scientifically fed, and the feed should account for 70% of the total amount in the evening. Basal fertilizer commonly used in human and animal manure, green manure, topdressing multi-purpose fertilizer, should be a small number of times, can choose urea, compound fertilizer, potash, etc., to disable ammonium bicarbonate; organic fertilizer should account for 70% of the total amount of fertilizer; When you are topdressing, you have to deepen the field water, and be careful not to sprinkle the fertilizer directly in the ditch.
3. Indulge in the use of drugs to respond to the disease with high efficiency and low toxicity, low residue, no impact on the set of fish and shrimp pesticides. Such as insecticide double, leaf loquat powder, dimethoate, trichlorfon, Jinggangmycin, carbendazim and so on. Herbicides and toxic carbofuran, safrothyrostazone, triazophos, toxamol, Suhua 203, Bordeaux mixture, sodium pentachlorophenol, etc. were banned. Use rice bran net with caution and malathion. When applying pesticides, deepen the field water to 15 cm or more, strictly control the concentration of the drug, and do not arbitrarily increase the dose. Powder pesticides were used before the dew had dried, and water-based pesticides were sprayed after the dew had dried. Change the new water in time after application and it is forbidden to spray at high temperature at noon.
4. The field management will conduct inspections 1 time in the morning and in the evening to check whether there is any water leakage or water shortage in the fields. The sheds and dense nets in and out of the water should be washed frequently to facilitate water filtration.
Choose a field with sufficient water supply and water injection and drainage. Raise the field till it is 50 cm to 70 cm, and the width is 40 cm to 50 cm. Compact and compact. According to the size of the plot, dig a field-shaped fish ditch, open a horizontal ditch or vertical ditch every 15 to 20 meters, and dig a ditch 2 to 3 rows of hoe and white seedling outside the field ridge, depth and width 40 cm to 60 cm. Slip open at the intersection of fish ditch or near the water inlet, with an area of ​​2 square meters to 5 square meters, and a depth of 1.0 meters to 1.2 meters. Inlet and outlet installation net bar facilities, shrimp density of 6 mesh ~ 8 mesh; crabs in the field side of the inside with calcium plastic plate, asbestos tile, plastic film and other materials to build a 50 cm to 70 cm high escape wall; The screw is used to set a dense shed or dense mesh. After the paddy fields are ploughed, 50-75 kg of quick lime are sprayed and disinfected per mu (10 cm to 20 cm in water layer) to destroy the predators and wild fish.
Second, intercropping stocking
1. Cultivate fish species Each year, put 3 centimeters of summer flowers from 1000 to 1200 tails. After the fish can feed, feed the condiment once a day. Feed 1.0 kg to 2.5 kg per acre and add 10 kg of chopped water. If the water quality is relatively high, the pupa and squid are mainly used; the grass carp, which has more weeds, may account for more than 50% of the stocks of grass carp; the stocking of hybrid squid and allogynogenetic silver larvae is generally adopted, but the two fish cannot be mixed. Raise, only a single raise.
2. Adult fish rearing 15 centimeters to 20 centimeters of grass carp per mu, or 15 centimeters of carp, carp, or 7 centimeters to 10 centimeters of carp, carp, or 1300 to 1500 tails of 5 centimeters to 10 centimeters of carp; 3 centimeters of muddy , 8,000 to 10,000 tails per acre can be stocked; 50 grams of astragalus, 1300 to 1,500 tails per acre can be stocked.
3. Prawns and crabs are stocked with 0.2 kg to 0.5 kg of shrimp per mu, or 15,000 to 25,000 tails of green shrimp; 0.5 kg to 0.5 kg of five young crabs per acre; and 80 crabs per kg ~ 120 specifications of stocking 5 kg to 10 kg; fish and crab (shrimp) polyculture, large-scale species of 15 kg per acre stocking.
4. Spirocheir stocking should choose screw shell complete without breaking the screw species, generally in the main market for better marketing, higher price snail species, specifications for every 50 / kg to 80 / kg, acre stocking 7.5 kg to 15 kg The stocking time should be from March to April.
Third, intensive heavy tube
1. Water Management In the initial stage of stocking, the water depth is 10 cm to 15 cm. With the long white water, the seed grows and gradually adds water to maintain a water depth of 20 cm or more. During the summer, the water level should be deepened or the temperature should be changed.
2. Feeding and fertilizing Feeding concentrates according to the season, such as cakes, bean dregs, wheat bran, rice bran, alfalfa, fly maggots, fish pellets and other aquatic animals. Feeding amount is generally 5% to 10% of the body weight of fish and shrimp, and the “four-fixation†feeding method is adopted. Shrimp is matched with 50% of animal food such as bean cake, wheat bran 50%, and snail. Crab feeds should be scientifically fed, and the feed should account for 70% of the total amount in the evening. Basal fertilizer commonly used in human and animal manure, green manure, topdressing multi-purpose fertilizer, should be a small number of times, can choose urea, compound fertilizer, potash, etc., to disable ammonium bicarbonate; organic fertilizer should account for 70% of the total amount of fertilizer; When you are topdressing, you have to deepen the field water, and be careful not to sprinkle the fertilizer directly in the ditch.
3. Indulge in the use of drugs to respond to the disease with high efficiency and low toxicity, low residue, no impact on the set of fish and shrimp pesticides. Such as insecticide double, leaf loquat powder, dimethoate, trichlorfon, Jinggangmycin, carbendazim and so on. Herbicides and toxic carbofuran, safrothyrostazone, triazophos, toxamol, Suhua 203, Bordeaux mixture, sodium pentachlorophenol, etc. were banned. Use rice bran net with caution and malathion. When applying pesticides, deepen the field water to 15 cm or more, strictly control the concentration of the drug, and do not arbitrarily increase the dose. Powder pesticides were used before the dew had dried, and water-based pesticides were sprayed after the dew had dried. Change the new water in time after application and it is forbidden to spray at high temperature at noon.
4. The field management will conduct inspections 1 time in the morning and in the evening to check whether there is any water leakage or water shortage in the fields. The sheds and dense nets in and out of the water should be washed frequently to facilitate water filtration.