一、细菌性病害 (1)烂肢病。病因:系运输、放养及生长过程中遭机械损伤或敌害侵入感染所致。症状:腹部及附肢腐烂,肛门红肿,摄食量下降乃至拒食,活动迟缓,最后无法蜕壳而死亡。防治:0.5～1PPm的土霉素或吠喃西林全池泼洒;泼洒新鲜生石灰,使池水浓度为1PPm,每星期泼洒1次,连续泼洒 First, bacterial diseases (1) limbs limb disease. Etiology: Department of transport, stocking and growth process by mechanical damage or predatory infection caused by invasion. Symptoms: decay abdomen and appendages, anal swelling, decreased food intake and even refused to eat, slow activity, and finally unable to molt shell and died. Prevention: 0.5 ~ 1PPm of oxytetracycline or kainamycin Quanchiposa; sprinkle fresh lime, so that the concentration of water pool 1PPm, spill once a week, continuous splashing