Ecological cultivation method and mode in North-west Hunan mountainous area

The invention discloses an ecological cultivation method and mode in a North-west Hunan mountainous area. The method comprises following steps of: A, distributing all modules of the ecological cultivation method; B, selecting pig breed feeds provided by a farm; C, performing solid-liquid separation and fermenting pig slurries: firstly performing solid-liquid separation prior to fermentation of pig manure and then adding myriophyllum elatinoides for fermenting solid manure after separation; D, purification of biogas slurries and reduction in nitrogen content: utilizing a straw and myriophyllum elatinoids system to remove harmful substances of biogas slurries and decreasing nitrogen concentration of biogas slurries; E, production of non-pollution tea and rice: utilizing tea and fertilizer sources of rice as principal base fertilizers and performing physical control over tea and rice pests; and F, purification of tail water: adopting myriophyllum elatinoid wetlands as a tail water purifying system in order to ensure up-to-standard release of tail water. The mode is composed of a pig farm, a tea garden, a septic tank, a straw purifying pond, myriophyllum elatinoid wetlands and a paddy field.The ecological cultivation method in the North-west Hunan mountainous area is simple and conveniently operated at low cost and is capable of completely controlling breeding pollution and increasing economic income of farmers.