1987-1988年在大田栽培条件下,对汕优63出穗前、后群体干物质生产、分配、产量构成因素、稻谷产量等进行了研究.结果表明:(1)每亩穗数、每穗颖花数、结实率、千粒重与产量均呈显著或极显著地线性正相关,相关系数分别为:0.6984、0.6582、0.4230和0.6615;(2)生物产量是大面积生产上左右产量的主要因素(r~2=0.927),出穗前、后群体干物质生产量对产量形成具有同等重要的作用;(3)群体干物质生产量出穗前与每亩穗数、出穗后与每亩总颖花量均呈正相关,相关系数分别为:0.8290和0.7980. The results showed that: (1) The number of panicles per acre, the number of spikes per panicle, the number of panicle per panicle The number of spikes, seed setting rate, grain weight and grain yield were all significantly or extremely significantly linearly correlated with the correlation coefficients of 0.6984, 0.6582, 0.4230 and 0.6615, respectively. (2) Biomass yield was the major factor influencing yield in large-scale production r ~ 2 = 0.927). The dry matter production of the population before and after heading out was equally important for the yield formation. (3) There was a positive correlation between the amount of spikelets, with correlation coefficients of 0.8290 and 0.7980, respectively.