The wilderness of leech and extensive cultivation 

　　The wilderness and extensive farming is the use of natural conditions, select a resolution of breeding line category fall behind cover a ZhongYangShi essentials. The wilderness and extensive cultivation, is not to ignore, also want to put a resolution of provenance, right on the bait, the fishing out line. 

　　一样平常有水库养殖、池塘养殖、沼泽地养殖、湖泊养殖、河道养殖、洼地养殖及稻田养殖等。

　　As usual with reservoir cultivation, pond aquaculture, marsh farming, breeding, cultivation, the river lake depression and rice paddy cultivation. 

　　这几种要领养殖面积较大，光照富足，天然饵料丰富，投资小，收益大。

　　These essentials breeding area is larger, light rich, rich natural bait, small investment, large gains. 

　　但单位面积产量较低，不易办理，要时常过细预防天然敌害、防逃以及水位涨落的变革等。