【摘要】 以杂种小麦产量因素及产量间的现有内在关系为基础，对８２５０～１２０００ｋｇ／ｈｍ２产量水平的杂种小麦的产量结构进行了优化，获得了若干产量结构优化模式。分析结果表明，目前和近期目标产量水平的杂种小麦产量结构应在一定群体穗数的基础上增加穗粒数和千粒重，特别是注意穗粒数的提高。文中建立的不同产量水平条件下产量结构的最优模式既有一定的多样性，同时又具有一定的规律性变化更多还原

【Abstract】 The optimization of yield components was conducted for hybrid wheat at yield level from 8 250 kg to 12 000 kg/hm 2 based on the relationship between yield components in current hybrid wheat. The analysis of optimized models showed that the kernel number per spike and thousand kernel weight should be increased on the basis of proper number of spikes in unit area, specially increasing kernel number per spike. Threr were diversity and regularity among optimized models of yield components established in this paper.更多还原