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。