山东省旱地小麦主要农艺和产量性状与气象因子的相关性分析

Correlation Analysis of Main Agronomic and Yield Characters of Dry-Land Wheat with Meteorological Factors in Shandong Province

分析了山东省近8年小麦生育期内气象三因素变化及旬气象因子与旱地小麦主要农艺和产量性状的相关性。结果表明:2003～2010年小麦生育期内降水量减少和日照时数增加的趋势较为明显,积温呈降低的趋势,但变化不明显。生育期内84个气象因子中有25个因子与旱地小麦主要农艺或产量性状呈显著或极显著相关,其中旬降水量有6个因子,旬日照时数有9个因子,旬平均气温有10个因子。因此,在今后旱地小麦品种选育过程中,应结合日照和气温等气象因子变化特点进行选择,从而提高选育成功率。

The correlation of the changes of three meteorological factors during the growth period of wheat and the meteorological factors in the 10 - day period with main agronomic and yield characters of dry - land wheat in Shandong in the past 8 years were analyzed in this paper. The results showed that from 2003 to 2010, the trends of rainfall decreasing and sunshine hours increasing were obvious, while the accumulated tempera- ture slightly decreased. Twenty - five of 84 meteorological factors were significant or extremely significant in correlation with the main agronomic and yield characters of dry - land wheat. Among the 25 factors, 6 were of 10 - day rainfall, 9 were of 10 - day sunshine hours and 10 were of 10 - day average temperature. It was con- cluded that in the breeding of dry - land wheat cultivars, the c shine and temperature should be considered, thus the breeding hanges of meteorological factors such as sun- success rate could be increased