作物种质资源，又称品种资源、遗传资源或基因资源，作为生物资源的重要组成部分，是培育作物优质、高产的物质基础，是维系国家食物安全的重要保证，是中国农业得以持续发展的重要基础。
建立了作物种质资源信息系统。
National Crop Germplasm Information System has also been set up.
本文提出了基于基因型值构建作物种质资源核心库的抽样方法。
A method for sampling core collection from crop germplasm was proposed.
结果表明：随着优良品种的大量推广，作物种质资源更新速度加快，老的农家品种越来越少；
The results showed that with the extension of improved varieties, the renewing rate of crop germplasm resources was accelerated, total number of older local varieties became less and less.
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