Yield Evaluation of Twenty-Eight Alfalfa Cultivars in Hebei Province of China

文献类型： 外文期刊

第一作者： Zhang Tie-jun

作者： Zhang Tie-jun;Kang Jun-mei;Guo Wen-shan;Yang Qing-chuan;Zhao Zhong-xiang;Xu Yu-peng;Yan Xu-dong

作者机构：

关键词： alfalfa;cultivars;yield;forage quality

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2014 年 13 卷 10 期

页码：

收录情况： SCI

摘要： Cultivar selection is important for alfalfa (Medicago sativa L.) hay production. From 2009 to 2012, a field study was conducted to evaluate the dry matter yield (DMY) of 28 cultivars in Cangzhou District of Hebei Province, China, and to determine the most suitable cultivars for this province and other zones with similar climate conditions. 28 alfalfa cultivars were sown in late March of 2009 and were harvested for hay four times in each subsequent year. The results showed that the climatic conditions resulted in significant differences in annual DMY among years, with the second year being the highest and the first year the lowest. The top five cultivars with the highest total DMY were L2750 (62.75 t ha(-1)), Horn (62.72 t ha(-1)), 86-266 (61.55 t ha(-1)), German (61.44 t ha(-1)) and Zhongmu 1(61.18 t ha(-1)), respectively. Across all four years, first harvest had the highest ratios to annual DMY except the cultivar of Rambler, while the fourth harvest had the lowest ratio. There were positive correlation relationships between DMY of each harvest and annual DMY, and the correlation coefficients were all significant in four years. And the path coefficients of first harvest were always the highest in four years. The qualities showed small variations among these cultivars and the cultivar L3750 presented the highest crude protein in both years. Crude protein had significant positive correlation with relative feed value (RFV) in both years while crude fiber had significant negative correlation with RFV and crude fiber.

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