论文部分内容阅读
蟹种是河蟹养殖的基础,科学放养蟹种是养好河蟹的关键环节,现将蟹种放养技术介绍如下:(一)放养时间生产实践证明,蟹种放养以冬放为宜,其优点有:1.此时气温低,蟹种活动能力弱,捕捞、运输、放养等操作过程中不易损伤蟹体,放养后成活率高。2.蟹种放养后,能很快进入冬
Crab species is the basis of crab farming, scientific stocking crabs are the key to raising crabs, crabs now stocking techniques are introduced as follows: (A) stocking production practice has proved that the crab species stocking winter to put appropriate, the advantages of : 1. At this time low temperature, weak activity of crab species, fishing, transportation, stocking and other operations is not easy to damage the crab body, after stocking high survival rate. 2 crab species stocking, can quickly enter the winter