论文部分内容阅读
根据乳山湾贝类养殖滩涂老化的特点,采用了压沙1、3 cm和翻耕20、40 cm的物理修复方式,经过9个月的养殖实验,结果表明,压沙1cm贝类生物量为4 .9 kg/m2, 压沙3cm贝类生物量为5 .6 kg/m2,翻耕20 cm贝类生物量为4. 6 kg/m2,翻耕40 cm贝类生物量为3. 9 kg/m2,对照组贝类生物量为4 .1 kg/m2。除翻耕40 cm修复方式外,其他3 种修复方式均显示一定的效果,并以压沙3 cm最好。翻耕20 cm虽然不如压沙的效果好,但与对照组相比仍然显示较大的优势,每亩约增产余。由于翻耕的修复方式操作简单,成本低,容易推广。
According to the characteristics of beach age of shellfish breeding in Rushan Bay, the physical remediation methods of 1, 3 cm and 20, 40 cm tillage were adopted. After 9 months of breeding experiment, the results showed that the biomass of 1 cm 4 .9 kg / m2, sand 3cm shellfish biomass was 5.6 kg / m2, plowing 20 cm shellfish biomass was 4. 6 kg / m2, plowing 40 cm shellfish biomass was 3.9 kg / m2, while that of the control group was 4.1 kg / m2. In addition to tillage 40 cm repair methods, the other three kinds of repair methods have shown some effect, and to sand 3 cm best. Plowing 20 cm, although not as good as the effect of pressured sand, still showed a greater advantage compared with the control group, with an increase of surplus per acre. Plowing as a simple way to repair, low cost, easy to promote.