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每年的5月-9月,每星期用绑有稻草、系上重物(砖头等)的尼龙绳,两人站在池塘两边各执一端在池塘中来回拖一次,可达到以下目的:一可提高花、白鲢产量。因绳拖可使被淤泥吸附的95%以上的有效磷得以释放,有利于浮游生物的大量繁殖,进而能促进花、白鲢增产。经试验,一般花、白链产量可提高30%-40%。二是防止“泛池”。池塘中每天都要投喂大量的饲料,有些没有吃完的饲料沉入池底,特别是春天施用的有机肥(如鸡粪、牛粪等)中不能溶解的物质,在池底腐败、发酵、膨胀,在水压的作用下,颗粒状物质外面就包裹了一层
Every May-September every week, a pair of nylon ropes tied with straw and heavy weights (bricks, etc.) are used to drag back and forth between the ponds on both sides of the pond for the following purposes: Improve flowers, silver carp yield. Due to the rope drag, more than 95% of the available phosphorus adsorbed by the silt can be released, which is good for the large-scale multiplication of plankton and further increase the yield of flowers and silver carp. After testing, the general flower, white chain output can be increased by 30% -40%. The second is to prevent “pan pool.” Ponds feed large amounts of feed every day, and some feed that has not been eaten into the bottom of the pond, especially those that can not be dissolved in organic fertilizers applied in spring (such as chicken manure, cow dung, etc.), spoil and ferment , Swelling, under the action of water pressure, the granular material is surrounded by a layer