中文摘要：

黑龙江省第一积温带是黑龙江省优质大米的主要产区，占全省水稻种植面积的十分之一左右。深入研究本地区近年来的育种水平变化，对于本区域水稻育种的健康发展具有十分重要的现实意义。本研究利用黑龙江省第一积温带哈尔滨试验站2006-2013年水稻生产试验、区域试验的数据，分析黑龙江省第一积温带水稻育种的主要趋势。结果表明，黑龙江省第一积温带水稻产量呈连年增加趋势，其增产取决于株高增加，生育期延长，穗变大，穗粒数增多，千粒重增加，抗冷能力增强；但分蘖数略有减少。今后育种实践中应该注意维持适当的株高、穗粒数和生育期，同时要保证足够的分蘖数。

英文摘要：

The first accumulated temperature zone is the main high quality rice production area of Heilongjiang province. It is estimated 10% of rice planting area in Heilongjiang. Research for the breeding trend in this region has a very important practical significance. The rice production test and regional test data of Harbin experimental station from 2006 to 2013 were used to analysis the breeding trend. The main trend of rice breeding were proposed as follow ： plant height, growth stage, panicle length, spikelet per panicle and 1 000 - grains weight all increased, but a slight reduction was found in tiller number. We should pay attention to maintain the proper plant height, spikelet per panicle and growth stage in the future, and pay attention to ensure adequate tiller number at the same time.