龙粳3号是黑龙江省农科院水稻研究所于1980～1982年以合江21号/雄基9号//合江16号///滨旭的组合方式复合杂交,1983年接种其复交后F_1花药离体培养选育而成的水稻新品种。1991年示范面积达3.12万公顷,1992年2月经省农作物品种审定委员会审定。龙粳3号具有以下几个特点。早熟。该品种生育日数,插秧为127～130天,直播为105～110天。在插秧条件下需活动 Longjing 3 is the hybrid rice of Heilongjiang Academy of Agricultural Sciences Rice Research Institute from 1980 to 1982 combined with combinations of Hejiang 21 / Xiongjiu 9 / Hejiang 16 /// Haixu, F_1 anther culture in vitro breeding of new rice varieties. Demonstration area in 1991 reached 31,200 hectares, in February 1992 by the Provincial Crop Variety Approval Committee. Longjing 3 has the following characteristics. precocious. The breed days, transplanting for 127 to 130 days, live for 105 to 110 days. Under the conditions of transplanting activities