The main benefits of fish farming in rice fields are: fish can weed, eat insects, gain weight and loosen soil in rice fields, which is very beneficial to rice growth; Paddy fields provide a living environment and some bait for fish, so that their mutually beneficial growth can achieve a win-win model. So what should we pay attention to when raising fish in rice fields?
1. Before transplanting, fish ditches and nests should be dug in the field to facilitate the activities of fish when drying rice fields. Usually the ditch is about 50 cm deep and the nest is about 80 cm deep. At the same time, the ridge should be reinforced to prevent escape and enemy damage.
2. Add water reasonably according to the growth of fish and rice, and gradually deepen the water with the growth of rice (finally keep it at the water level of 13~ 17 cm) until the rice starts to dry at booting stage.
3. Because there are fish in the field, we should mainly use fermented organic fertilizer, and use inorganic fertilizer several times in the later stage of topdressing. Stimulating fertilizers such as ammonia, ammonium chloride and ammonium bicarbonate should not be used.
4, safe medication, although fish farming in rice fields can kill many pests. For example, grass carp and carp can eat Chilo suppressalis, Chilo suppressalis, weevil, golden flower worm and so on. After crossing the water, it can only harm rice seedlings, but also eat insects falling into the water, such as rice planthopper, leafhopper (floating dust), mature larvae of armyworm, larvae of rice leaf roller and so on. However, it is inevitable to use rice in the growth process, but it is best to choose some broad-spectrum drugs with low toxicity and residue to prevent fish elements. In short, under the condition of not affecting the growth of rice, we should use drugs as little as possible, reduce the harm to fish, and reasonably solve the contradiction between them, so as to truly achieve a win-win effect for both fish and rice.
Why is it said that fish can be raised in rice fields? The main advantage is that fish can eat some small zooplankton. With the growth of fish intestines, they gradually turned to eat rotifers, cladocera and trematodes. When they get older, they gradually become typical herbivores. They can eat many kinds of grass: duckweed, wormwood, black algae, POTAMOGETON POTAMOGETON, wormwood, etc., just to help our farmers clean up weeds in rice fields! I remember when I was a child, my parents often took us to the fields to weed by hand. It is difficult to clear a field in one morning. If we had fish, we wouldn't have to do it ourselves!