Avermectin preparation for aquaculture and preparation method of avermectin preparation

The invention discloses an avermectin preparation for aquaculture. The avermectin preparation is prepared from components in parts by weight as follows: 1-5 parts of avermectins, 1-10 parts of tannicacid, 1-30 parts of an organic solvent, 1-30 parts of a surfactant and 25-96 parts of water. The avermectin preparation for aquaculture can efficiently kill parasites, can effectively prevent secondary infection of a wound due to parasites and can be uniformly dispersed in culture water, too high local concentration is avoided, and the toxic and side effects of effective ingredients and solvents are greatly reduced; the dosage of organic solvents is greatly reduced, and the cost and pollution are reduced. The preparation method is simple and easy to operate, and only a common temperature-control reaction kettle is required to serve as production equipment. 本发明公开了种水产养殖用阿维菌素制剂，按重量份数计，包括如下组分：阿维菌素1～5份、鞣酸1～10份、有机溶剂1～30份，表面活性剂1～30份、水25～96份。本发明的水产养殖用阿维菌素制剂，即可高效杀灭寄生虫，又可有效防止上述寄生虫造成的伤口发生继发感染；还可均匀分散于养殖水体，避免局部浓度过高，大大降低了有效成分和溶