论文部分内容阅读
冬天,有些养鱼户喜欢将鱼塘水放浅,使鱼能在浅水里晒到太阳而达到取暖的目的,其实这样做有害无益。冬
In winter, some fish farmers love to dilute fish pond water, so that the fish can reach the sun in shallow water to achieve the purpose of heating. In fact, doing so is not good. winter