本文介绍了两系粳杂７０优０４在省内外示范中产量表现，表明其增产效果十分显著．归约了适时播种，培育多蘖壮秧；密值增穗，科学旋肥，加强后期管理高产栽培要点，为该组合在长江中下游地区作单、双晚种植提供参考。 This paper introduces the yield performance of two-line japonica hybrid 70 You 04 in demonstration in both inside and outside of the province, which shows that the yield increase effect is very significant. Reduced the timely sowing, cultivating more tiller sprouts; dense increase by ear, scientific spinning, to strengthen the late management of high yield cultivation points for the combination in the middle and lower reaches of the Yangtze River for single, double late planting to provide a reference.