论文部分内容阅读
春季工作主要是鱼塘清整,鱼种投放等。但在春季,池塘养鱼要突出一个“早”字,以求鱼塘在新的一年里获得最佳的经济效益。 1、早清塘:鱼塘一般应在12月底或元月初清整完毕。清整之前每亩鱼塘可施洒100～150公斤生石灰,并在日光下曝晒7～10天。清塘的基本要求是挑去一层池底淤泥,修整堤埂、进出水口的拦鱼设施。 2、早放鱼:鱼塘在清整后的7～10天即可放鱼,一般不要超过2月中旬,因为这段时间,气温和水温都比较低和鱼类的活动量小。消化、排泄少,便于运输和操作;受伤少,成活率高。 3、早管理:据测定,家鱼在水温8～10℃的范围还少量摄食。然而,在春季
Spring work is mainly fish ponds, fish species and so on. However, in the spring, fish ponds should highlight an “early” character in order to achieve the best economic benefits for fish ponds in the new year. 1, early Qing Tong: Fish ponds should generally be completed by the end of December or early January. Clean up before the mu fish ponds can be sprinkled 100 to 150 kg of lime, and exposed to sunlight for 7 to 10 days. The basic requirement of Qingtang is to pick up a layer of silt at the bottom of the pond, trim the embankments, and stop the fish at the inlet and outlet. 2, early release of fish: fish ponds in the clearance after 7 to 10 days to put fish, generally not more than in mid-February, as this time, the temperature and water temperature are relatively low and fish activity is small. Digestion, less excretion, ease of transport and operation; less injury, high survival rate. 3, early management: According to the determination of domestic fish in the water temperature of 8 ~ 10 ℃ also a small amount of food intake. However, in the spring