优良品种是农作物优良高产的基础,是实现高效农业的先决条件。国家高度重视农作物品种的改良与推广工作。在科研育种和农作物品种管理工作者几十年的努力下,我国先后育成、审定和推广了一大批优质、高产多抗的农作物新品种,为各个时期农业发展做出了重要的贡献。《全国农作物审 Good varieties are the basis for good high-yielding crops and a prerequisite for efficient farming. The state attaches great importance to the improvement and popularization of crop varieties. Under the efforts of scientific research breeding and crop variety management workers for decades, China has bred, approved and promoted a large number of new crop varieties with high quality, high yield and multiple resistance and made important contributions to agricultural development in various periods. "National Crops Review