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八月份我省白天平均气温31℃,夜晚平均气温21℃,降雨增多。池塘平均水温28℃～30℃,全省渔业生产进入最佳生产期,是鱼类摄食量最大的月份,也是鱼体绝对增重量最大月份。水产养殖病害以寄生虫性、细菌性疾病为主。随着鱼类排泄粪便增多与发酵分解,池塘水体中有害气体(非离子氨、硫化氢、亚硝酸盐)含量增大,需及时调节水质预防养殖事故的发生。一、病情预测1.草鱼:易发生赤皮病、烂鳃病、肠炎病、指环虫病车轮虫病、锚
In August, the average temperature of daytime in our province was 31 ℃ and the average night temperature was 21 ℃, with an increase of rainfall. The average temperature of the pond is 28 ℃ ~ 30 ℃. The province’s fishery production enters the optimal period of production, which is the month with the largest fish intake and the largest absolute weight gain of the fish. Aquaculture diseases are mainly parasitic and bacterial diseases. With the excretion of fish excrement and fermentation decomposition, pond water harmful gases (non-ionic ammonia, hydrogen sulfide, nitrite) content increased, timely adjustment of water quality to prevent aquaculture accidents. First, the disease forecast 1. Grass carp: prone to red-skin disease, rotten gill disease, enteritis disease, ring worm disease wheel rot disease, anchor