As the saying goes, “fish farming in rice paddies, three-point technology, and seven-point managementâ€, the daily management of rice-fish farming is the key to the success of fish farming, and it is necessary to prevent the tendency to reproduce and maintain lighter management. The daily management of fish farming rice fields mainly includes the following tasks: 1, adhere to the field inspection. To do morning and evening field inspections. In the early morning, observe whether the fish is floating and the activity is normal. In the evening, check the eating conditions. Check whether the ridge is leaky or not. Check whether the inlet and outlet are unobstructed. Repair any problems if necessary. 2, clear fish ditch, fish pit. Yugou fish pit is the main activity site for fish. After a period of time, it is easy to silt up. Clean up regularly, and clear the silt in the fish ditch and fish pit, and collect the bait residue bait to ensure unimpeded access; When plowing and ploughing rice, it is necessary to prevent the mud from flowing back into the fish pit; in high temperature season, take it on the fish pit. Shady sheds allow the fish to cross over in summer. 3, adjust the water level, properly handle rice shallow, and fish contradiction. According to the characteristics of different growth stages of rice, timely adjustment of water level. After transplanting till the late parturition, the water depth is 6-8 cm, so that the seedlings are rooted, green, rooted, and tilled. At this time, the fish body is small and shallow irrigation is possible. In the medium-term, the rice booting needs a large amount of water, and the field water gradually deepens to 15-16 cm. At this time, the fish grow up, the swimming intensity increases, the food intake increases, and the water level deepens the growth of the fish. Early stage rice grouting is mature, and it is necessary to adjust the water level frequently. Generally, it should be about 10 cm. 4, flood control and drought. In recent years, the weather has been unusual, floods and floods have occurred frequently, and fish farming in paddy fields has become the first priority. During drought, it is necessary to pay attention to water conservation and fish conservation, save water, and prepare for the typhoon to prevent the overflowing of the fields. If there is a fish pit, you can concentrate the fish in the fish pit and then stop it with a net, or Adding a net cover above the fish pit can play a role in keeping fish from fleeing. 5. Correctly deal with the relationship between farmland fertilization, application of pesticides and fish culture, strictly control the types, methods, quantity and time of fertilization and medication, and handle the conflicts between fertilization, pesticide application and fish culture. 6, reasonable feeding. Adhere to the principle of “Four Sets and Three Looks†and select high-quality feeds to ensure the nutritional requirements for fish growth so as to facilitate the healthy growth of fish. 7, prevention and control of predators. Fish farming in paddy fields has many predators such as birds, rats, snakes, wild boars, and aquatic insects, which are extremely harmful to fish. The main methods for strengthening predator control are as follows: (1) Birds: The damaging birds in rice paddies are herons, eagles, red-tailed gulls, kingfishers, etc. They can generally be driven by humans or captured using device traps. In recent years, many egrets have become the number one bird-fighting threat to the safety of paddy fish farming. At present, people's preventive measures are the most ideal measures to install plastic nets over the fish farms; followed by Tanaka Yungping, so that birds can not see fish and achieve bird protection. Kingfishers like to inhabit in high places. Farmers use this feature to insert stakes in the fields and install rat traps on the piles. When the kingfisher stands on a mouse trap, the feet are caught and cannot be escaped. Capture. Mountain farmers are accustomed to this method and can achieve better results. Since the kingfisher is alive, it will be returned directly to the natural world and it will come back to eat fish. The best way to keep the bird away from the farmland is to avoid kingfisher damage. (3) Snakes: The main snakes are mud snakes, silver snakes, water snakes, etc. Snakes are allowed to enter the field. If you enter Daejeon, you can kill it by human capture. In the case of mud snakes, it is also possible to use the "sweeping sweep" to eliminate them, but pay attention to the safety of the fish. The specific method can be used before the stocking with "killing sweep" to carry water clearing fields, and pay attention to the safety of the surrounding fields, so as to avoid the poisonous water inflow will kill others fish. (4) Insects: Aquatic insects that damage rice fields are mainly otters, frogs, pine algae, and red nannies. These insects can be killed by trichlorfon. The method is to spray 90% of trichlorfon 0.5 g per side with water. In the mountains and mountains of my county, there are also aquatic insects such as grasshoppers. Commonly used suction cups suck the fish's eyes, causing fish inflammation and even eyeball shedding, which seriously threatens the field fish and affects the survival rate. Prevention and control methods: After the ploughing and fertilizing, the paddy field with paddy rice will be melted with 50 kg of lime per acre and poured into the slurry. Sprinkler water will be sprayed around the field ridges to eliminate grasshoppers, jaundice and loach.
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(2) Rats: The major rodent pests in the rice region are Rattus norvegicus, Rattus norvegicus, Mus musculus, etc. They not only bite off rice plants and eat spikes, but also farmed fish in the field, which can be killed by rat poison. Pay attention to human and animal safety.
8. Prevention of fish diseases: Fish diseases in paddy fish farms are less frequent, mainly due to the fresh water in the paddy fields, high oxygen content, and low stocking densities, feeding on more natural foods, and fewer rice field pathogens. Therefore, relatively speaking, fish have strong disease resistance and are not easy to get sick. However, in recent years, due to increased stocking densities, improper management techniques, and changes in the surrounding environment, fish diseases in paddy fields have been increasing.
