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在5-9月份这段时间,每星期用绑有稻草的尼龙绳,系上砖头等重物后,两人各拉一端,沿着池埂在池塘中来回拖1次,可以防止泛池发生,还可提高鲢、鳙鱼产量。池塘中春天施用的有机肥如鸡粪、牛粪等以及平时吃剩的饲料,在池底腐败、发酵产生有害气体,如硫化氢、氨、二氧化碳等,由于水压的作用,这些有害的气体暂时包裹在一层生物膜中不能释放出来。遇阴雨天气压下降等天气变化时,上下水层对流,生物膜破裂,有害气体会突然释放,造成泛池。经常进行拖绳。就能使生物膜
During the period from May to September, each week with a straw tied nylon rope, tied to a brick and other heavy objects, the two pull one end, along the pond 来 drag back and forth in the pond 1 times, to prevent the occurrence of pan-pool , But also increase the production of silver carp and bighead carp. Organic fertilizers, such as chicken manure and cow dung, applied in the spring in the pond, as well as leftover fodder usually spoil the bottom of the pond and ferment to generate harmful gases such as hydrogen sulfide, ammonia, carbon dioxide and the like, and due to water pressure, these harmful gases Temporarily wrapped in a layer of biofilm can not be released. When the rainy weather pressure drop and other weather changes, the upper and lower aquifers convection, biofilm rupture, harmful gases will be suddenly released, resulting in pan-pool. Always carry the tow rope. Can make biofilm