| 宁南山区苜蓿生产现状与产草量提高途径 |
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| 引用本文： | 成红,杜峰,赵克学,穆兴民.宁南山区苜蓿生产现状与产草量提高途径[J].草地学报,2002,10(3):231-236. |
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| 作者姓名： | 成红 杜峰 赵克学 穆兴民 |
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| 作者单位： | 1. 宁夏固原县草原站, 固原, 756000;2. 中国科学院教育部水土保持与生态环境研究中心, 杨陵, 712100;3. 宁夏固原县科技局, 固原, 756000 |
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| 基金项目： | 中国科学院知识创新工程项目“黄土高原区域水土保持环境效应与生态环境建设对策课题”( KZCX1-10 -0 4) |
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| 摘 要： | 1996-2000年5a在8个试区的测试结果表明,宁南山区苜蓿鲜、干草产量分别为21740和6905kg/hm2,属低产区。灌水能提高苜蓿产草量,并减缓衰退过程。施肥能显著提高苜蓿产草量,纯N施肥量应在300kg/hm2。适宜播种量为7.5～15kg/hm2,田间密度宜在20～40株/m2。为提高越冬率,苜蓿播种期不能早于4月下旬,也不能晚于8月中旬。选用DEI、美国杂交和SD等高产优良苜蓿品种是提高宁南山区苜蓿产草量的重要技措。
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| 关 键 词： | 宁南山区 苜蓿 生产力 |
| 文章编号： | 1007-0435(2002)03-0231-06 |
| 收稿时间： | 2002-02-07 |
| 修稿时间： | 2002年2月7日 |
Alfalfa Production Status and Way of Improvement in the Hilly South of NingXia Autonomous Region |
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| CHENG Hong ,DU Feng ,ZHAO Ke-xue ,MU Xing-min.Alfalfa Production Status and Way of Improvement in the Hilly South of NingXia Autonomous Region[J].Acta Agrestia Sinica,2002,10(3):231-236. |
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| Authors: | CHENG Hong DU Feng ZHAO Ke-xue MU Xing-min |
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| Institution: | 1. Grassland station of Guyuan county, Guyuan Ningxia 756000, China;2. Institute of soil and water conservation, Chinese Academy of Science & Ministry of education, Yangling Shaanxi 712100, China;3. Science and Technology bureau of Guyuan County, Guyuan Ningxia 756000, China |
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| Abstract: | In the background of low alfalfa production status,and in needs of industrialization and crop cultivation discontinuation for forestry and grassland,ways of fertilization,irrigation,plantation and good varieties introduction are studied to improve the productivity in this article.From 1996 to 2000,measured yields in 8 plots show that the yield is 21740kg/hm2 in fresh weight and 6905kg/hm2 in dry matter in the hilly south of Ningxia autonomous region,which means it belongs to low productivity area.Irrigation can improve the productivity and slacken the process of retrogress.Fertilization can also improve the productivity and pure N fertility should be about 300kg/hm2.Amount of seeding should be 7.5～15kg/hm2,plant per square meter should be maintained in the range of 20～40.Sowing date should be early to increase the rate of survivals after winter between the last ten day of April and the middle ten day of August.At last,plantation of good acclimated and high yield variety,e.g.DEL,American cenospecies and SD,is an important way of yield improvement. |
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| Keywords: | The hilly south of Ningxia autonomous region Alfalfa Productivity |
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