农村致富农机化节本增效重点技术１机械深施化肥技术长期以来，我国一直采用人工表施化肥，施用技术与手段落后，化肥平均利用率仅为３０％，而先进国家则已达到６０％，差距很大。表施化肥还造成农业生产成本提高、污染环境等后果。改变这种落后方式的办法就是推广机械深... The key technologies for increasing rural agro-economizing cost-saving technologies 1 Mechanically deep-fertilizing chemical fertilizers For a long time, China has been using artificial fertilizers to apply fertilizers. The application technology and means are behind. The average utilization rate of chemical fertilizers is only 30%, while the advanced countries have reached 60%. ,Differs greatly. Fertilizer production also raises the cost of agricultural production, environmental pollution and other consequences. The way to change this backward way is to promote mechanical deep...