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在育苗水体小或者供暖、供气不足的育苗室,如果想多出苗,可以利用河蟹的胚胎发育与温度成正比这一习性,让河蟹有计划的分批排幼,多搞几个梯度,来达到充分利用水体使单位水体出苗量比正常的要高出几倍的效果。我们通过96年在盘锦二界沟的720m~3水体的育苗室中的495m~3的池子做实验证明,此法优点很多,切实可行,效益明显。 试验地点我们选在盘锦二界沟河蟹育苗场 育苗水体共计726m~3,分成22个池子,每个池子33m~3,拿出15个池子做为实验池。卤虫孵化池共80m~3。充气为22千瓦的罗茨鼓风机二台。供暖为1吨
Small nursery water body or heating, inadequate gas supply nursery room, if you want more sprouts, you can use the crab embryonic development and temperature is proportional to the habit of let crabs planted in batches rowing, take a few more gradient to Achieve the full use of water to the unit of water than the normal emergence of several times the effect. We have done experiments in a 495m ~ 3 pond in a nursery room of 720m ~ 3 water in Panjin Erjiegou in 1996. This method has many advantages, which are feasible and effective. The test site we selected in the crab nursery in Panjin Erjieou nursery water a total of 726m ~ 3, divided into 22 ponds, each pond 33m ~ 3, took out 15 ponds as the experimental pool. Artemia hatch pool a total of 80m ~ 3. Inflatable 22 kW Roots blower two. Heating is 1 ton