论文部分内容阅读
在我国北方有些水产养殖池塘越冬期间需要打冰孔,以便于池塘水体与空气进行气体交换,增加水体中的溶解氧,改善水体质量。愈是天寒地冻的时候,冰冻结越厚,越需要在冰面上打冰孔,并且还要捞出打碎的冰块,这是在隆冬季节鱼塘管理人员每天要做的工作。曲阜市王庄乡前王村水产养殖户孔宪水,利用塑料泡沫的保温性能和比重小的特点,较好地解决了打冰孔
In northern China, some aquaculture ponds need ice holes during winter to facilitate gas exchange between pond water and air, increase dissolved oxygen in water and improve water quality. The more cold it is, the thicker the icy knot is, the more ice holes need to be drilled in the ice, and the broken pieces of ice are also removed. This is what fishponds managers need to do during the winter season. Qufu Wangzhuang Wangcun aquaculture farmers before the village, the use of plastic foam insulation properties and a small proportion of the characteristics of a better solution to fight ice hole