Trace element premix for penaeus vannamei as well as preparation method and application of trace element premix

The invention belongs to the technical field of aquaculture premixes, and particularly relates to a microelement premix for penaeus vannamei as well as a preparation method and application of the microelement premix for the penaeus vannamei, and the microelement premix for the penaeus vannamei comprises 15-35 parts of zinc fumarate, 20-40 parts of manganese methionine, 50-100 parts of ferrous glycinate, 1.5-4.5 parts of copper sulfate, 0.1-0.5 part of cobalt chloride monohydrate and 3.5-8 parts of selenium yeast. The formula comprises the following components in parts by weight: 1.9-4.5 parts of potassium iodate, 15-30 parts of fumed silica, 50-200 parts of magnesium sulfate, 50-100 parts of calcium gluconate, 100-300 parts of monocalcium phosphate and 177.7-693 parts of zeolite powder. The particle sizes of all the components are smaller than or equal to 100 meshes. The premix provided by the invention not only can improve the desalination survival rate of the young penaeus vannamei, but also can effectively