我区位于胶州湾畔，育苗海水富营养化程度较高。rrrrrrrrn湾内每年发生多起赤潮。育苗过程中，水质过肥以及由rrrrrrrrn此产生的多种有害情况比较普遍。rrrrrrrrn 2002年，相继布的3个日本对虾幼体池都出现了大rrrrrrrrn量棉絮状漂浮物，不长时间沾没了幼体，直接导致了育rrrrrrrrn苗失败。笔者用3～9×10-6三氯化铁分别处理育苗用水， My area is located in Jiaozhou Bay, nursery seawater higher eutrophication. r r r r r r r nA number of red tides occur in the bay each year. In the nursery process, the water quality is too high and a variety of harmful situations resulting from this are more common. In 2002, the three Japanese shrimp larvae in each cloth appeared n a quantity of cotton flocculent floating objects, not a long time stained larvae, a direct result of fertility failure. I use 3 ~ 9 × 10-6 ferric chloride treatment seedling water, respectively,