【摘要】 本文主要研究了1985年到1990年间，全国杂交中稻区域试验的104个品种，并分析了13个数量性状遗传因素对杂交中稻产量的影响，得出影响杂交中稻产量的主要因素是：有效穗、总苗数、总粒数、结实率和全生育期等．还考察了在这些因素相互作用下，对杂交中稻产量的更深层次的影响.更多还原

【Abstract】 In this paper,104 varieties of middle-season hybrid rice of regional trial in our country were investigated from 1985-1990,and 13 genetic factors of quantitative character were analyzed.The result shows,that the effective spike,total seedling number and total grain number are the main factors that effects the yield of hybrid rice.The penetrating influence under the interaction of these factors to the yield was also inspected.更多还原