【摘要】 本文以长期土壤肥力定位监测和施肥实践为依据，揭示了安徽省农田50～70年代氮磷钾养分全面亏缺，氮、磷养分成为限制因子；80年代土壤有机质、全氮和速效磷平均含量均有所上升，而速效钾含量则急剧下降，成为新的限制因子。针对当前影响安徽省“两高一优”农业发展的制约因素，提出猛攻冬绿肥单产，实行秸秆过腹还田，应用配方施施肥技术成果，推广平衡施肥及化肥深施等施肥对策，以期达到维持与提高土壤肥力，实现农业高产、优质、高效的目的。更多还原

【Abstract】 Based on long-term soil fertility monitoring and fertilization practice, it was found that the soil N, P, and K were depleted and were the limiting factors for crop production in Anhui during 50’s to 70’s. In 80’s, soil organic matter, total nitrogen and available phosphorus increased, and soil available potassium decreased dramatically and has become a limiting factor for agricultural production. Therefore, the strategis suggested for further agricultural development in Anhui are, ① to increase winter green-manure production; ②to return plant residues to soil as animal excrements, and ③)to balance fertilizer need of crops, and deep placement of fertilizer fertilizer in soil, in order to maintain and improve soil fertility and for high yield, high quality and high return in agricultural production.更多还原