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如何避免农田用水高峰期与池塘、小型水库养鱼争水影响鱼产量和经济效益的矛盾,是近年来一直需要解决的问题。几年来我们在渔业生产中利用“塘中塘”方式养鱼,基本上缓解了这个矛盾。在不改变鱼种投放量和管理的前提下,每亩比原来多产成鱼15公斤左右,亩多增加收入30—50元。何为“塘中塘”?即在池塘或小型水库底部(中央)开挖一面积占总面积1/4到1/5的塘,塘的深度挖1.2—1.5米,形状以规则为宜。“塘中塘”的开挖最好结合冬、春季水利兴修一并进行,这既不影响渔业生产,又节约了建塘的经费。“塘中塘”养鱼增效益的理由是:每
How to avoid the contradiction between the peak water use period of farmland and the competition of ponds and small reservoirs for fish to affect the fish production and economic benefits has always been a problem to be solved in recent years. In the past few years, we have used the method of “pond ponds” in fish production to basically fish up this contradiction. Without changing the amount and management of fish species on the premise, per acre more fish than the original 15 kilograms, more than the increase of 30-50 yuan of income. What is “Tong Pond”? That is, at the bottom of a pond or small reservoir (central), excavate a pond covering an area of 1/4 to 1/5 of the total area. The depth of the pond should be dug 1.2-1.5 m. The shape should be in accordance with the rules. “Tong in the pond,” the best combination of excavation in winter and spring together with water conservancy, which neither affect the fishery production, but also save the funds for construction Tong. “Tong in the pond,” the reasons for raising fish benefits are: every