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通过对全优2689的产量结构进行分析,结果表明:应用简单相关分析,有效穗数、株高、穗长、每穗总粒数、结实率、千粒重等各因子与产量的相关性均不显著;而应用偏相关分析和通径分析,6个因子中有效穗数、穗长、每穗总粒数和千粒重等4个因子对产量的影响均达到极显著水平,其中有效穗数、每穗总粒数和千粒重的影响是正效应,穗长的影响是负效应。在栽培中应主攻每穗总粒数,注意追施穗肥,增加一次枝梗和二次枝梗上的粒数及着粒密度,从而增加每穗总粒数,同时协调好每穗总粒数、有效穗数、千粒重三者之间的关系,充分发挥该品种的增产潜力。
Through the analysis of the yield structure of Quanyou 2689, the results showed that there was no significant correlation between the yield and yield per panicle using simple correlation analysis (P <0.05), including panicle number, plant height, panicle length, panicles per panicle, seed setting rate, While partial correlation analysis and path analysis showed that the effect of four factors including effective panicle number, panicle length, total panicles per panicle and 1000-grain weight on the yield all reached the extremely significant level. Among them, the effective panicle number, ear The effect of total grain number and 1000-grain weight is a positive effect, and the effect of spike length is a negative effect. In cultivation should focus on the total number of grains per panicle, pay attention to topdressing panicle, increase the number of primary branches and secondary branches on the grain number and grain density, thereby increasing the total number of grains per panicle, while coordinating the total grain per panicle Number of effective panicles, grain weight of the relationship between the three, give full play to the variety of yield potential.