在藕田中养蟹,藕田不仅给河蟹提供了适宜的生活、生长环境,同时也给其提供了饵料生物,反之,对莲藕来说也是有利的,表现在：一是河蟹可吃掉田中部分杂草和害虫,起到人工除草和生物治虫的作用；二是河蟹爬行运动和摄取底栖生物的活动起到松动泥土的作用,促进了莲藕整个植株的生长；三是河蟹排出的粪便含有氮、磷、钾等肥分,起到了增肥的作用。总之,藕田养蟹具有藕、蟹互利共生的特点。为使河蟹在藕田里 In the lotus root crab, lotus field not only to crabs provide a suitable living, growing environment, but also to provide them with food organisms, on the contrary, the lotus root is also beneficial, manifested in: First, the crab can eat away Tanaka part Weeds and pests play a role in artificial weeding and biological pest control; the second is crawling crabs and intake of benthic organisms activities play a role in loosening the soil, and promote the growth of the whole lotus root; Third, crabs excrete manure contains nitrogen , Phosphorus, potassium and other fertilizer, played a role in fattening. In short, lotus root crabs with lotus root, crab mutual benefit and symbiotic characteristics. To make crabs in lotus fields