论文部分内容阅读
黄鳝是一种特种淡水鱼,市场需求量大。在黄鳝养殖过程中发生损苗会造成较大损失。这里对损苗的原因进行分析。1.苗种来源复杂。黄鳝苗在野外的时候,环境好,水源饵料充足体质就好,做养殖时长得就快。同样是30克的苗子,有些在野外有2年,也有的3年甚至4年,这种在野外过的年数长,还没长大的错过了最佳生长期,长得慢。所以经常干旱地方出来的鳝苗长得就慢些。获取的方式主要是笼捕,电
Eel is a special freshwater fish, the market demand. In the eel farming process loss of seedlings will cause greater damage. The reason for the loss of seedlings here is analyzed. 1. The sources of seed are complex. When the eel seedlings in the wild, the environment is good, enough water to feed like constitution, grow faster when doing farming. The same is 30 grams of seedlings, some in the wild for 2 years, and some 3 years or 4 years, this in the wild for many years, have not grown up missed the best growing season, grow slowly. So often out of the field where the emergence of an eel grow more slowly. The main method is to capture the cage, electricity