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开春以后,随着鱼塘水温的回升,鱼的食欲日趋旺盛。为及时补充鱼在越冬期间的营养消耗,促进生长发育,应及时加强饲养管理。1.早施肥池塘开冻后水温达5℃以上时就应施肥,以培养水中浮游生物,供鲢、镛鱼摄食,但因水温较低,一般的有机肥料分解较慢,宜施用人粪尿或化肥。施肥数量应根据池塘底质的肥瘦和肥料质量而定。一般每亩(1亩=667平方米,下同)池面可施牲畜粪150～200千克(湿重);施人粪尿时,每亩可
After the spring, with the fish pond water temperature rise, fish appetite is exuberant. In order to promptly replenish the fish during the winter nutrition consumption, promote growth and development, should promptly strengthen feeding and management. 1. Early fertilization ponds should be fertilized after the water temperature reaches 5 ℃ or above to raise the plankton in the water for feeding the bighead carp and bighead carp. However, due to the low water temperature, the organic fertilizer generally decomposes slowly, and human excrement should be applied Or fertilizer. The amount of fertilization should be based on the quality of fat and fertilizer pond sediment. General mu (1 mu = 667 square meters, the same below) pool surface can be applied livestock manure 150 to 200 kg (wet weight); Shi manure, per acre