论文部分内容阅读
利用塑料大棚高密度培育早茬蟹苗,不但能克服早茬蟹苗在低水温、昼夜温差大、及大风雨等恶劣环境条件下,适应能力差,变态蜕皮慢,死亡率高的弊端,从而缩短了培育期,提高了蟹苗的成活率;而且利用大棚实行高密度集约化养殖,降低了能耗,提高了单位面积的产值;同时,因其占地少,成本低,操作方便,很适
Using high-density plastic greenhouse to cultivate early-stage crab seedlings can not only overcome the shortcomings of early-stage crab seedlings such as low temperature, large temperature difference between day and night, and bad weather conditions such as heavy rain and wind, poor adaptability, slow metamorphosis and high mortality rate, Shorten the incubation period, improve the survival rate of crab seedlings; and the use of greenhouse intensive intensive farming, reducing energy consumption and increase the output value per unit area; the same time, because of its small footprint, low cost, easy operation, very suitable