【摘要】 探讨汕优多系１号（珍汕９７Ａ×多系１号）杂稻组合高产制种技术，以提高制种产量，加速其推广应用。结果表明：影响汕优多系１号制种产量的主要因素是母本亩穗数，实现高产的主要途径是增穗、保粒、提高异交结实率。应用父母本的时差、叶差合理安排播差期，采用１期父本大双行确定适宜的行比，配套培育壮秧，规格开厢插足基本苗，合理进行肥水管理，科学喷施“九二０”是夺取制种高产的主要技术措施。更多还原

【Abstract】 The hybrid seed-production technique of Shanyou Duoxi 1(Zhenshan 97A×Duoxi 1)were studied for increasing the hybrid seed yield and promoting the popularizing of the hybrid fice.The results show that the main factor affecting the seed yield is the spike number per mu of the female parent and the higher yield could be acquired by means of increasing the spike number,setting percentage and available grains.The technical steps were adopted including adjusting sowing,selecting suitable sow ratio, breeding health seedling,planting enough norm of seedlings and so on.更多还原