种子发芽率的测定,对确定良种等级,节省种子,迅速处理种子,经济有效播种,保证全苗等,都具有指导生产的实际意义。但用常用发芽法要测出发芽率需要较长时间,及时指导生产困难不少。为及时指导生产实际,用化学试剂——“氯化三苯基四氮唑”可在两小时内达到发芽率速测的目的。农村各生产大队已用此法迅速测出种子发芽率,及时指导 Seed germination rate determination, to determine the level of seed, save seeds, quickly process the seeds, economic and effective sowing, ensure the whole seedlings, etc., have the practical significance of guiding the production. However, the commonly used germination method to measure the germination rate takes a long time, timely guidance of many production difficulties. In order to timely guide the actual production, with chemical reagents - “triphenyltetrazolium chloride” in two hours to achieve the purpose of rapid determination of germination rate. The production brigade in rural areas have been using this method to quickly measure the seed germination rate, timely guidance