Fish bone meal, bone meal and desquamation are added to the bait, so that crayfish can quickly peel off the old skin and grow rapidly. In a word, summer is coming. Farmers who have no grass or little grass in shrimp ponds should pay attention to the fact that the coverage rate of aquatic plants should reach 60% to 70% in summer, so that lobsters can become safe summer. In places where the direct sunlight is serious, it is best to block the sunlight. It is best to prevent the appearance of zhexia caused by too high water temperature. Due to the shortage of aquatic plants and low dissolved oxygen in the water, the modifier is not conducive to the decomposition of organic matter, so it is necessary to start the oxygen machine to improve the dissolved oxygen content in the water. After the bottom reform, beneficial bacteria and algae are planted in the fertilizer water. The beneficial bacteria can inhibit the reproduction of harmful bacteria, reduce the anaerobic decomposition of organic matter, and the beneficial algae can carry out photosynthesis and provide a lot of oxygen for the water body.
To raise shrimp, grass should be planted first, but it may be more difficult to plant submerged aquatic plants now, so I suggest transplanting some epiphytes, such as water hyacinth and peanuts, with planting area of about 40% and evenly distributing them with bamboo poles to prevent large-scale spread. It can effectively reduce the daytime light, lower the water temperature, purify the water and reduce the ammonia nitrogen content in the water. In summer, the light is strong and the water temperature rises rapidly. Raising the water level can reduce the water temperature. Crayfish may not be peeled because of insufficient calcium and nutrition, so when solving these problems, we don't know whether there is insufficient calcium in the water. If there is insufficient calcium, we usually need to supplement calcium for about 10 day. The peeling of crayfish is very exhausting. If the crayfish is undernourished, the body will become weak, reducing the number of peeling and increasing the peeling interval.
As the saying goes, raising shrimp is equal to not planting grass. Raising shrimp must have grass. After building a pond for disinfection, it is necessary to plant aquatic plants, and there are many varieties of aquatic plants. Gaocao, Yilezao, Alternanthera philoxeroides, millet grass, etc. The more varieties of aquatic plants, accounting for about 60% of the aquatic plant area, aquatic plants can help crayfish to peel. After peeling, the edge of crayfish's body is very soft, and they can hide in the aquatic plants to kill each other. Aquatic plants can provide shade for crayfish, and there is a bottom plate of aquatic plants shrimp. The aquatic plants don't grow well, which is not good. So you must plant grass before raising shrimp. In your case, when there is no grass in the pond, peanuts can be supplemented. But if the density is high, don't step on lobsters, you can plant them on the boat or plant a kind of algae, so stick the grass into the bottom of the water. Ok, let me see the water plants I planted!