论文部分内容阅读
一、绿色食品水产品品种选育 绿色食品水产品除选择高产、高效益的品种外,还应考虑对病害的抗御能力,尽量选择适应当地生态条件的优良品种。为了避免近亲繁殖,造成品种退化,有条件的绿色食品水产养殖场,应尽可能选用大江、大湖、大海的天然苗种作为养殖对象。绿色食品水产养殖人工育苗应注意以下几点:1.亲本培育:亲本池应建在水源良好、排灌方便、无旱涝之忧、阳光充足、环境安静、不受人为干扰的地方。亲本放养密度、雌雄比例合理恰当,根据养殖对
First, the selection of green food aquatic products Green food aquatic products in addition to select high yield and high efficiency varieties, but also should consider the resilience of the disease, try to choose to adapt to the local ecological conditions of fine varieties. In order to avoid inbreeding, resulting in degradation of varieties, conditional green food aquaculture farms, aquariums should be used as far as possible, the Great Lakes, the sea as a breeding target for natural species. Artificial breeding of green food aquaculture should pay attention to the following points: 1. Parents breeding: The parent pond should be built in good water, irrigation and drainage convenience, no worries of drought and flood, sunny, quiet environment, from human interference. Parental stocking density, male and female proportion is reasonable and appropriate, according to farming pair