改革开放 2 0年来 ,我国农业及农村经济发展不仅取得了举世瞩目的巨大成就 ,同时也经历了并不断在发生着一系列既广泛又十分深刻的变化。仅就当今的农业发展形势而言 ,我国农产品的供给已由长期短缺的卖方市场正明显地向着总量平衡、丰年有余的买方市场迅速转变 ;农业的持续发 In the 20 years since the reform and opening up, the development of agriculture and rural economy in our country has not only made tremendous achievements that have attracted worldwide attention, but also gone through and constantly undergoing a series of extensive and profound changes. Only in today’s agricultural development situation, the supply of agricultural products in our country has been apparently balanced by the shortage of long-term seller markets, and the buyer’s market in the new year has been rapidly transformed. The continuous development of agriculture