Organic-matter farmland construction and cultivation technology on unsuitable agricultural and pastoral land under northwestern specified conditions

The invention discloses an organic-matter farmland construction and cultivation technology on unsuitable agricultural and pastoral land under northwestern specified conditions, and relates to the organic-matter farmland construction and high-efficiency cultivation technology under the northwestern specified conditions. By virtue of the technology, hundreds of millions of mu and a billion mu of organic-matter facility farmland can be newly increased, and continuous production capacity is achieved. A construction scheme is as follows: organic matters are prepared according to the local conditions; ditching is carried out on the selected unsuitable agricultural and pastoral land, wherein the depth, the width and the clear distance of the ditches are determined according to the plan and to-be-planted crops; the ditches are paved with basement membranes, and filled with the organic matters; a drip irrigation zone paved with a membrane is arranged; and a floor type steel-arch double-membrane agricultural greenhouse and an energy-saving environmentally-friendly heating apparatus are arranged in about one mu of land, and the organic-matter facility farmland is constructed for planting vegetables, fruits and grains. A main cultivation technology is as follows: long-vine fruits and vegetables are planted once per year, are high in annular output and are picked by many times, so that the annular yield per mu is more than 20-30t; the long-vine fruits and vegetables are mainly sold in winter and spring; a biological chelate fertilizer is mainly applied; drip irrigation with fertilizer is supplemented; the main fertilizer and a micro element fertilizer containing 10 micro elements are prepared; a biological technology and a physical method are adopted to prevent diseases and kill pests; the photosynthetic effect is increased by a simple CO2 gas fertilizer; 80-100m3 of water is consumed per mu per year; a hundred thousand of RMB is invested per mu; and the investment can be recouped within one year.