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杂交水稻研究在我国已有较长的历史，至1995年全国累计推广杂交稻面积达1．3亿多公顷，居世界首位。杂交稻种子的纯度鉴定问题一直是种子质检部门、水稻育种研究单位、制种单位和种子公司共同关心的问题。种子纯度是衡量杂交水稻种子质量的主要指标，纯度的下降将导致作物产量
Hybrid rice research has a long history in our country. By 1995, the total area of hybrid rice popularized in China reached more than 130 million hectares, ranking the first in the world. The purity identification of hybrid rice seeds has always been a common concern of seed quality inspection departments, rice breeding research units, seed production units and seed companies. Seed purity is a measure of hybrid rice seed quality of the main indicators of decline in purity will lead to crop yield