Only 11 kinds of exotic organisms such as ze lan of smoke pink cootie , violet bine , loose wireworm , be opposite every year the pecuniary loss that fishery of herd of our country farming causes is 57 . 4 billion yuan 仅烟粉虱、紫茎泽兰、松线虫等11种外来生物，每年对我国农牧渔业造成的经济损失为574亿元。
