【摘要】 1988年在我国南方十二省杂交稻制繁种区计4.8万亩面积上进行了“九二○”增效剂的应用试验、示范.结果表明,该增效剂能提高“九二○”的功效。使“九二○”用量减少50％,从而降低了生产成本;同时,这种增效剂还可以提早不育系花时0.5～1.0小时,提高不育系柱头外露率,有利于异交结实,使制繁种产量提高10％左右.更多还原

【Abstract】 The effect of GA3 synergists were tested and demonstrated on 3.2 thousands hectares of hybrid rice seed plots distributed in 12 provinces in southern China in 1988. The results revealed that the chemicals could significantly enhance the function of GA3, reduce the dosage by 50% and the cost of seed production. Meanwhile, the flowering of the treated sterile lines was advanced for 0.5-1.0 hours, the stigma exertion was also improved and the setting rale was increased. This brought about 10% increase of the yield of the hybrid rice seed.更多还原