| 不同年限紫花苜蓿(生长)水分利用效率和耗水系数的差异 |
| |
| 引用本文： | 孙洪仁,关天复,孙建益,武瑞鑫,李品红.不同年限紫花苜蓿(生长)水分利用效率和耗水系数的差异[J].草业科学,2009,26(3):39-42. |
| |
| 作者姓名： | 孙洪仁 关天复 孙建益 武瑞鑫 李品红 |
| |
| 作者单位： | 中国农业大学草地研究所,北京,100193;中国农业大学草地研究所,北京,100193;中国农业大学草地研究所,北京,100193;中国农业大学草地研究所,北京,100193;中国农业大学草地研究所,北京,100193 |
| |
| 基金项目： | 农业部引进国际先进农业科学技术计划(948计划)，科技部科技支撑计划，农业部公益性行业专项基金 |
| |
| 摘 要： | 采用小型蒸渗仪法，在北京平原区研究了一年生和二年生紫花苜蓿Medicago sativa水分利用效率和耗水系数的差异。研究结果表明：二年生紫花苜蓿的生物产量和经济产量水分利用效率14.7和17.1 kg/(hm2·mm)]显著高于一年生紫花苜蓿12.6和14.7 kg/(hm2·mm)](P＜0.05)；生物产量和经济产量耗水系数（679和584）显著低于一年生紫花苜蓿（793和682）(P＜0.05)。研究表明生长年限对紫花苜蓿的水分利用效率和耗水系数具有影响。
|
| 关 键 词： | 紫花苜蓿 水分利用效率 耗水系数 生长年限 小型蒸渗仪 北京平原区 |
Difference of water use efficiency and water consumption coefficient of alfalfa different in growing season |
| |
| SUN Hong-ren,GUAN Tian-fu,SUN Jian-yi,WU Rui-xin,LI Pin-hong.Difference of water use efficiency and water consumption coefficient of alfalfa different in growing season[J].Pratacultural Science,2009,26(3):39-42. |
| |
| Authors: | SUN Hong-ren GUAN Tian-fu SUN Jian-yi WU Rui-xin LI Pin-hong |
| |
| Institution: | Institute of Grassland Science;China Agricultural University;Beijing 100193;China |
| |
| Abstract: | Difference of water use efficiency (WUE) and water consumption coefficient (WCC) of alfalfa (Medicago sativa) between the first growing season and the second growing season was studied in Beijing plain with micro lysimeter. The results showed that the WUE based on biological and economic yields 14.7 and 17.1 kg/(hm2·mm)] of the second growing season were significantly (P<0.05) higher than that of the first growing season 12.6 and 14.7 kg/(hm2·mm)], the WCC based on biological yield and economic yield（679 and 584）of the second growing season were significantly (P<0.05) lower than that of the first growing season (793 and 682). This proved that the growing years affected the WUE and WCC. |
| |
| Keywords: | alfalfa water use efficiency water consumption coefficient growing year micro-lysimeter Beijing plain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《草业科学》浏览原始摘要信息 |
| 点击此处可从《草业科学》下载免费的PDF全文 |
