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中文摘要：
根据国家农作物品种审定公告（2003—2014年）,对北方春大豆晚熟组审定的25个品种的产量、农艺性状及品质进行分析。结果表明,随着年代的推移,其产量、单株荚数和脂肪含量呈上升趋势,特别是2010年以后产量和品质表现极其显著,2011—2014年平均每667 m^2产量达219.3 kg,较2003—2006年增长15.8%,品种的脂肪含量同比对应增长1.29%,期间审定高脂肪品种数占审定品种总数的48.0%,但是没有高蛋白品种审定。相关性分析结果表明,产量与单株荚数呈显著正相关,与脂肪含量呈正相关,相关系数分别为0.48^＊和0.37;而脂肪与蛋白质含量呈极显著负相关,相关系数为-0.75^＊＊。
英文摘要：
The yield, agronomic and quality traits of 25 late-maturing northern spring soybean varieties were analyzed according to National crop variety approval notice （ 2003-2014 ） . The results showed that their yield, pods per plant and oil content increased as time going on, especially yield and quality traits showed a significant progress after 2010, the average yield in 2011-2014 was 219.3 kg/667m2, an increase of 15.8% from 2003-2006. And oil contents were up by 1.29% year-on-year. In the past 15 years, high oil varieties certified in 2011-2014 accounted for 48.0% of all authorized varieties. However, no high protein variety was authorized. Correlation analysis showed that the yield was very significantly positively correlated with pods number per plant and oil content, correlation coefficient were separately 0.48＊ and 0.37, while there was a very significant negative correlation between oil and protein content, the correlation coefficient was -0.75＊＊.
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