| 紫花苜蓿发育规律及不同收获茬次产量与营养构成研究 |
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| 引用本文： | 李昌伟,高飞,刘继远.紫花苜蓿发育规律及不同收获茬次产量与营养构成研究[J].北京农业,2008(9):17-20. |
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| 作者姓名： | 李昌伟 高飞 刘继远 |
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| 作者单位： | 北京市土肥工作站,北京,100029 |
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| 摘 要： | 本文调查了紫花苜蓿不同生育时期养分吸收以及各茬次苜蓿干草产量和营养物质的变化情况,结果表明,苜蓿植株在分枝初期至现蕾期生长最快,养分吸收量大,植株蛋白质积累速度快,现蕾至初花期干物质和蛋白质积累量达到最高,是最佳收获时期。苜蓿周年可以收获四茬,第一茬养分吸收量最大,产量最高,占全年产量的36.9%,蛋白质累积量占全年的36.5%,是影响苜蓿周年产量的关键时期。
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| 关 键 词： | 养分吸收 粗蛋白质 茬次 |
| 修稿时间： | 2008年2月5日 |
Studies on Yield and Nutrition Constitution of Alfalfa in Different Cuts |
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| Li Changwei,Gao Fei,Liu Jiyuan.Studies on Yield and Nutrition Constitution of Alfalfa in Different Cuts[J].Beijing Agriculture,2008(9):17-20. |
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| Authors: | Li Changwei Gao Fei Liu Jiyuan |
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| Institution: | Li Changwei Gao Fei Liu Jiyuan |
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| Abstract: | Growth and nutrient absorption of alfalfa was surveyed. Yield and nutritious matters constitution in four cuts of alfalfa was different. Maximum nutrition absorption and crude protein accumulation was reached from early branching stages to the appearing bud stages. Optimal harvest was at the appearing bud or early florescent stage with highest yield of crude protein. Alfalfa could harvest 4 times in a year, Hay yield of first cuts was highest with productivity account for 36.9 % and crude protein yield 36.5 %. |
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| Keywords: | Nutrient absorption Crude protein Cuts |
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