Research on Winter Injury and Prevent Technique of Alfalfa  (Medicago sativa L.cv.‘Aohan’)in Chifeng Region

doi:10.11733/j.issn.1007-0435.2001.01.009

›› 2001, Vol. 9 ›› Issue (1): 50-57.DOI: 10.11733/j.issn.1007-0435.2001.01.009

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Research on Winter Injury and Prevent Technique of Alfalfa (Medicago sativa L.cv.‘Aohan’)in Chifeng Region

SUN Qi-zhong¹, GUI Rong¹, HAN Jian-guo ²

1. Grassland Institute, CAAS, Hohhot, Inner Monglia 010010, China;
2. Institute of Grassland Science, China Agricultural Universitey, Beijing 100094, China

Received:2000-08-17 Revised:2000-11-16 Online:2001-02-15 Published:2001-02-15

赤峰地区敖汉苜蓿冻害及其防御技术

孙启忠¹, 桂荣¹, 韩建国²

1. 中国农业科学院草原研究所, 呼和浩特010010;
2. 中国农业大学草地研究所, 北京100094

作者简介:孙启忠,男,1959年生,副研究员,1988年硕士毕业于内蒙古农牧学院,现为中国农业大学草地所在读博士生,主要从事牧草生产及草地改良方面的研究,已发表论文十余篇
基金资助:
*国家“九五”科技攻关96-016-01-04专题研究内容

Abstract

Abstract: In Chifeng region there were four kinds winter injury of alfalfa;(1)no injury;(2)regrowth from below crown only;(3)no regrowth bud,but root was no injury;(4)dead plant.The reason of winter injury was alter seeding and crown on depth.Early seeding seed fertilizer,earth up the plant or its crown before winter could reduced winter injury.

Key words: Winter injury of alfalfa, Defensing frostbitten technique, Over wintering trait

摘要： 敖汉苜蓿在赤峰地区受冻害程度有4种类型;全株未受冻;根颈上端受冻受黑,下端仍能再生新芽;全部根颈和根的部分受冻变黑,已不能再生新芽;全株受冻死亡。引起冻害的主要原因是播种期偏晚,在播种当年生长期短,根颈入土浅。结果表明,越冬前苜蓿必须具有2个以上分枝,根颈入土深>5cm以上,根颈膨大,直径>0.3cm以上者方能减轻或避免受冻。适时早播,施种肥,延长生长期促进幼苗生长,在封冻前对平作进行浅耕覆土或深开沟磨平等措施,均能增加根颈保温层,有效提高苜蓿越冬率。

关键词: 苜蓿冻害, 防御技术, 越冬, 赤峰地区

CLC Number:

S541.9

SUN Qi-zhong, GUI Rong, HAN Jian-guo . Research on Winter Injury and Prevent Technique of Alfalfa (Medicago sativa L.cv.‘Aohan’)in Chifeng Region[J]. , 2001, 9(1): 50-57.

孙启忠, 桂荣, 韩建国. 赤峰地区敖汉苜蓿冻害及其防御技术[J]. , 2001, 9(1): 50-57.

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Research on Winter Injury and Prevent Technique of Alfalfa (Medicago sativa L.cv.‘Aohan’)in Chifeng Region

赤峰地区敖汉苜蓿冻害及其防御技术

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