沼液珍珠养殖高值资源化利用

以沼液为肥料,研究其对珍珠存活率、珍珠食物浓度及珍珠产量和品质等的影响。结果表明:沼液养殖珍珠,使得珍珠蚌的死亡率下降7%;养殖水域中有益藻类和轮虫的数量显著增加,其中轮虫的浓度为原来的556倍;珍珠的产量和品质也有不同程度提高,其中产量提高了6%,圆珠产出率提高1.5%,优质珠率提高8%,光泽度A+B级的珍珠比例增加7%。因此,沼液养殖珍珠是沼液有效利用的一种途径,同时还可减少其排放带来的水环境问题。

High Value and Resourceful Utilization of Biogas Slurry Resources for Pearl Culture

The effects of biogas slurry fertilizers on pearl culture,including pearl survival rate,pearl food concentration and pearl yield and quality were studied.The results showed that,by biogas slurry cultures,the death rate of pearl mussel mortality declined by 7%,the population of beneficial algae and rotifer increased in breeding waters,and the rotifer concentration was 556 times that of the original.The results also showed that pearl yield and quality had been improved to different extents,the yield increased by 6%,the output rate of round pearl increased by 1.5%,the high quality pearl rate can be increased by 8% and the gloss level A+B pearl proportion increased by 7%.Thus method of biogas slurry cultured pearl is not only a way for effective use of biogas slurry,but also can reduce their emissions to bring water environment problem.