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在江汉平原湿地农区,运用食物链加“效益环”的原理,实行鱼鸭共生技术,鸭的活动可以增加鱼塘水体活性、改善鱼塘的小气候和生态环境,从而使成鱼较均匀地活动在溶氧量相对较高的水层,可有效防治鱼泛塘。鱼鸭混养可充分利用水面和土地,劳动生产率和综合效益高。但在鱼鸭共生塘的成鸭圈养比例上要适度,以避免数量过多而产生负面影响。
In the Jianghan Plain wetland farming area, the principle of fish-duck symbiosis is implemented by the principle of food chain plus “efficiency ring”. The activities of ducks can increase the activity of fish ponds, improve the microclimate and ecological environment of fish ponds and make the adult fish more uniform Activity in a relatively high dissolved oxygen in the water layer, which can effectively prevent and deal with fish Pan Tong. Fish and ducks polygamy can make full use of water and land, high labor productivity and comprehensive benefits. However, the proportion of ducks in fish and duck symbiosis ponds should be modest, in order to avoid the negative effect of excessive quantity.