【摘要】 两优7871是由178S和R71杂交选育的杂交水稻品种，具有早熟、抗倒伏、优质、高产和稳产等特点。本文总结分析了该品种的选育过程、特征特性、高产栽培及制种技术，该品种在2016—2017年长江中下游区域试验中，全生育期130 d，平均产量9.51 t/hm~2，外观品质优，适口性、抗病性较好；其高产栽培注重培育壮秧，控制无效分蘖，争取有效穗数，促大穗，提高结实率，重点防治稻瘟病、稻飞虱等；制种技术要点包括合理安排播差期，培育壮秧，合理密植，加强田间管理和巧喷赤霉酸生长调节剂等。研究结果为该品种在长江中下游作为一季中稻、麦茬直播稻和再生稻种植提供参考。更多还原

【Abstract】 Liangyou 7871 is a hybrid rice variety developed by crossbreeding 178S and R71, characterized by early maturity, lodging resistance, high quality, high yield, and stable production. The breeding process, characteristics, high yield cultivation, and seed production techniques of this variety were summarized and analyzed. In the middle and lower reaches of the Yangtze River from 2016 to 2017, this variety had a full growth period of 130 days, an average yield of 9.51 t/hm~2, excellent appearance quality, good palatability, and good disease resistance. High yield cultivation techniques focused on cultivating strong seedlings, controlling ineffective tillers, striving for effective panicle numbers,promoting large panicles, improving seed setting rates, and emphasis was placed on preventing and controlling rice blast disease, rice planthopper, and other diseases. The key points of seed production technology included reasonable arrangement of sowing time, cultivation of strong seedlings, reasonable planting density, strengthening field management,and skillful spraying of gibberellic acid plant growth regulator. The research results provided references for the cultivation of this variety as a mid season rice, wheat stubble live broadcast, nice and regenerated rice in the middle and lower reaches of the Yangtze River.更多还原