(一)清淤和消毒工作池塘中有机物和腐殖质往往是水质恶化并诱发水产动物病害发生的根源。养殖户应在每年的11-12月及时清除池底过多淤泥,并用生石类或漂白粉全池泼洒进行消毒,彻底杀灭各种病原体。老塘改造清淤要做好消毒工作。一般每亩1米水深用生石灰75～100千克、山茶麸50千克打碎浸水一夜后全塘均匀泼洒。也可先泼洒石灰后再泼洒茶,或泼 (A) Dredging and disinfection of organic matter and humus in the ponds are often the root cause of deterioration of water quality and induced diseases of aquatic animals. Farmers should be in the 11-12 months of each year to remove too much mud at the bottom of the pool, and use of stone or bleach Quanchiposa disinfection, and thoroughly kill a variety of pathogens. Laotang Dredging to do a good job of disinfection. Generally 1 meter per acre of lime 75 to 100 kg of lime, 50 kg of tea bran smashed submerged overnight after the whole pond spilled. May also be splashed lime and then sprinkle tea, or splash