杂交水稻种子销售前如何进行纯度鉴定，一直是生产单位和经营单位的难题，靠送海南进行田间生产鉴定，不仅费用高，时间长，且结果滞后于种子销售季节。１９９８年房县种子公司利用本县大温泉地热优势，首次对本县良种场生产的杂交水稻种子进行冬季纯度鉴定，以求销售前得... How to identify the purity of hybrid rice seeds before they are sold has always been a problem for the production units and business units. It is not only expensive and long time to produce, but also lags behind the seed sales season by sending them to Hainan for field appraisal. In 1998, Fangxian Seed Co., Ltd. made use of the geothermal advantage of Grand Hot Springs in this county to make winter purity identification of hybrid rice seeds produced in this county's good breeding field for the first time, so as to seek pre-sale ...