Method for consumption of poultry excrement in sandy soil in arid and semi-arid areas

Abstract

The invention relates to a method for consumption of poultry excrement in sandy soil in arid and semi-arid areas, which includes: making decomposed poultry excrement into organic fertilizer, applying the organic fertilizer into a farmland under wheat-corn rotation system, performing basal application of the organic fertilizer 2800-3200kg/667m<2> in wheat planting seasons, and performing reduced application of pure nitrogen fertilizer 2-3kg; and performing basal application of the organic fertilizer 3000-3500kg/667m<2> in corn planting seasons under the condition that wheat straws are fully returned to the field, and performing reduced application of nitrogen chemical fertilizer 2.5-3.5kg. Factors such as organic fertilizer resource, climate, hydrological condition and the like are comprehensively considered, organic-inorganic ratio, application time, application manner and the like are determined, and accordingly, poultry excrement from farms can be effectively consumed, input of chemical fertilizer can be saved, application within the load capacity range enables yield of corn and wheat to be increased without affecting crop quality, and environmental pollution can be effectively prevented.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for absorbing and utilizing livestock and poultry manure in sandy loamy soil in arid-semi-arid regions. Background technique [0002] In order to increase food production, the amount of chemical fertilizers used in the Huaihe River Basin has increased from 4.95 million tons in 1990 to 7.02 million tons at present, with an average amount of about 500 kilograms of chemical fertilizers per hectare. However, the local chemical fertilizers are mostly applied by spreading, and most of them are applied once. The effective utilization rate is only about 30% to 35% on average. The excess chemical fertilizers cause a lot of non-point source pollution. These pollutants not only directly enter the surface water body with surface runoff, pollute rivers and lakes, but also Seeps into the ground, contaminating soil and groundwater. The polluted groundwater is eventually discha...

AI Technical Summary

Problems solved by technology

Due to economic, policy and technical reasons, the treatment rate of feces and wastewater in the livestock and poultry farming industry is currently low, and biogas fermentation and composting are generally used as treatment methods. 58% of large-scale farms have feces composting treatment facilities, thus It has caused a large amount of open-air piles of manure in farms, which has become one of the main sources of non-point source pollution of farmland and water bodies.