Fishery: long shell in summer, long flesh in autumn. In the cool autumn season, it is the peak season for fish growth. The following four levels must be considered: Radish Juice Vermicelli Bag,Reusable Radish Juice Vermicelli Bag,Radish Juice Vermicelli Bag Wholesale,Radish Juice Vermicelli Plastic Bag Ningxia ZhaiXianSong Commercial and Trading Co.,Ltd. , http://www.nxupin.com
One, put a good feeding and fertilizer off.
Generally, fertilization and feeding amount in September to November should account for about 30% of the total annual fertilization and feeding amount. When applying organic fertilizer, it should be a small number of times, so as to avoid over-flooding caused by pond fish floating head; application of inorganic fertilizer, per acre can use carbon ammonia 5 ~ 7.5 kg, or urea 2.5 ~ 3.5 kg. After the “white dewâ€, the resources of grasses gradually decreased. At this time, concentrate feed should be the main method. ?
Second, turn off the management of good water quality. After the fall, the temperature dropped, and the amount of bait in the fish ponds was relatively increased. Therefore, the water should be changed frequently to keep the fish ponds fresh and fat and not dirty.
Third, to prevent fish floating head off.
For individual fish ponds with large intensive culture densities, due to the large amount of fertilizer applied for feeding, the organic matter content in the water is large, and the oxygen consumption factor is also increased, so that the phenomenon of anoxic floating heads is prone to occur. You can turn on the aerator in the evening or early morning, or add new water to adjust.
Fourth, the prevention and control of good fish disease.
After the "White Dew", although the fish disease season has passed, it must not be ignored. From September to November, every 15 to 20 days, fish ponds with a depth of 1 meter per acre need to be sprayed with quick lime 15 to 20 kilograms each time, and 300 grams of bleaching powder can also be used to disinfect the fishpond bags.