四川省10年来小麦育种的产量变化

为了研究近年来四川省小麦育种工作在产量和产量性状上的改良效果，分析了1996-2005年的四川省小麦新品种区域试验资料。通过对每年度试验的平均产量及产量性状、对照在每年度的平均产量及产量性状和在每年度试验中达到续试或审定标准的参试品系的平均产量及产量性状三类数据的对比分析．认为10年间，四川小麦产量增长缓慢，整个产量育种还处于平台期，有效穗数缓慢增长，穗粒数基本稳定．千粒重在40-45g之间波动，株高维持在86-90cm之间。提出今后四川省小麦产量育种应当注意增加穗数和增加千粒重两个方面，建立新的平衡，实现四川小麦产量的进一步提高。

Wheat Yield Movement in Sichuan Regional Trial of 1996-2005

To research yield improvement in Sichuan wheat breeding, the data of Sichuan regional trial of 1996-2005 were analyzed. The data were classified to trial average yield and yield component, check average yield and yield component, and varieties average yield and yield component which were up to the select- ed standard. Those three classification data were compared. The result is that yield breeding in Sichuan was in fluctuation during 1996-2005. During 1996-2005, wheat yield in Sichuan was improved slowly, ear number on unit area was also increased slowly, grains per ear were steady, 1000 grain weight fluctuated between 40-45g, plant height maintained in 86-90cm. Ear number on unit area and grain weight will be two key traits in yield improvement in Sichuan in future.