摘要
农耕地增施有机肥料能够改良土壤,培肥地力,促进植株生长,增加作物产量,显著改善农产品品质,提高农业生产的经济效益。同时,可增加土壤团粒结构,改善长期使用化学肥料所形成的土壤板结,增加土壤降雨入渗强度,减少地面径流量,减轻农耕地水土流失量。土壤中氮和农药等有害物质的流失是以水土流失为载体,进入江河、湖泊、水库等水源地,加大了这些水源地的污染,所以减轻了土壤水土流失量,就能够很好控制农耕地有害物质的流失,减轻江河、湖泊、水库等水源地的泥沙淤积和水质污染。因此科学使用有机肥料,可减少水土流失,减轻环境污染,改善农产品品质,又可减少化学肥料农药的投入,对促进山区农业持续发展和河流生态修复将起到积极的作用。
After more manure applied in the cropland, the soil on the tilth layer and the crop products quality can be improved, land productivity and crop yield can be increased, crop growth on the land can be developed fast and well, and the benefit will be got more as well. At the same time because the soil granular structure increased, hardened and impervious soil can be improved on the land, therefore the capacity of rain infliltration into soil will be added, the runoff and soil erosion must be reduced. The nitrogen and pesticide in the topsoil with soil erosion go into river, lake and reservoirs and so on. So that the soil erosion reduced, the nocuous matter loss can be controlled as well, the sediment silt and water pollution in rivers, lakes and reservoirs can be decreased. So applying manure reasonably the soil erosion and environment pollution can be decreased, the products quality can be improved, the input for chemical fertilizer and pesticide can be reduced, it is better to accelerate agricultural development in mountainous area and river ecologic environment rehabilitation.
出处
《水土保持研究》
CSCD
北大核心
2007年第3期13-15,共3页
Research of Soil and Water Conservation
关键词
有机肥料
农药
环境污染
农业持续发展
河流生态修复
manure
pesticide
environment pollution
agricultural sustainable development
river ecologic environment rehabilitation
