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以三系杂交组合新香优８０为对照，研究了大穗型亚种间杂交组合８１０Ｓ／６３００４的单株产量构成．结果表明，单株有效穗数不足是影响大穗型水稻产量的主要因子，单株有效穗构成也影响大穗型水稻产量形成．随分蘖级次升高，大穗型水稻单穗生产力下降明显．
Taking the three-line hybrid combination Xinxiangyou 80 as control, the yield per plant of 810S / 63004 was studied. The results showed that insufficient number of effective panicle per plant was the main factor affecting the yield of large panicle rice. The composition of effective panicles per plant also affected the yield formation of large panicle rice. With the increase of tillering stage, the productivity of single ear of large panicle decreased significantly.