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舞三毛小金藻是一种半咸水害藻,其代谢产物中含有毒素,可使鱼类中毒死亡。河北省青县运河以东为半咸水区,浅层水质含盐量在4—7‰之间。在多年的养鱼过程中,因舞三毛小金藻之害造成的绝产或减产损失达几十万元。在养鱼实践中我们对舞三毛小金藻的危害程度和防治方法进行了总结,初步形成了一套行之有效的防治措施,现介绍如下: 一、舞三毛小金藻的生物学特性 舞三毛小金藻属于金藻门、三毛金藻纲、三毛金藻目。是一种浮游生活的单细胞藻类,多在氯化物型
Dance Sanmao small gold algae is a kind of brackish water harmful algae, its metabolites contain toxins, can fish poisoning death. The Qingxian Canal in the east of Hebei Province is a brackish water area with a shallow water salinity of 4-7 ‰. In many years of fish farming process, due to dance Sanmao small chrysanthemum damage caused by the absolute loss or loss of up to several hundred thousand dollars. In the practice of fish farming, we have summed up the harm degree and control methods of Dioscorea nipponica, initially formed a set of effective prevention and control measures, are described as follows: First, the biological characteristics of Dan San Mao Jin algae dance San Mao small gold algae belong to the kelp door, Chlamydomonastrum, San Mao Jin albino head. Is a planktonic single-cell algae, mostly in chloride type