Effects of Different Sowing Dates on Alfalfa Production Performance and Overwintering Rate in Sandy Land

doi:10.11733/j.issn.1007-0435.2020.02.030

Acta Agrestia Sinica ›› 2020, Vol. 28 ›› Issue (2): 538-546.DOI: 10.11733/j.issn.1007-0435.2020.02.030

Effects of Different Sowing Dates on Alfalfa Production Performance and Overwintering Rate in Sandy Land

TIAN Yong-lei¹, WANG Xian-guo³, ZHANG Yu-xia¹, ZHANG Shang-xiong³, JING-Zhao³, CONG Bai-ming¹, MU Zong-jie², BAI Chun-li²

1. Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia Autonomous Region 028041, China;
2. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, Inner Mongolia Autonomous Region 010031, China;
3. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received:2019-11-08 Revised:2019-12-23 Online:2020-04-15 Published:2020-04-11

沙地生境不同播期对紫花苜蓿生产性能及其越冬率的影响

田永雷¹, 王显国³, 张玉霞¹, 张尚雄³, 荆照³, 丛百明¹, 慕宗杰², 白春利²

1. 内蒙古民族大学, 内蒙古通辽 028041;
2. 内蒙古自治区农牧业科学院, 内蒙古呼和浩特 010031;
3. 中国农业大学动物科技学院, 北京 100193

通讯作者: 王显国, 张玉霞
作者简介:田永雷(1994-),男,内蒙古赤峰市人,硕士研究生,主要从事牧草种质资源与利用研究,E-mail:Thundertian1994@163.com
基金资助:
国家公益性行业（农业）公益项目（201403048-2）；内蒙古自治区科技储备项目（2018MDCB03）；内蒙古自治区“双一流”建设一带一路作物学项目（NMDGJ0018）资助

Abstract

Abstract: This study was aimed to determine the suitable sowing time of Alfalfa (Medicago sativa) in Horqin sandy land. In 2017,three alfalfa varieties,Knight T,Gongnong 1 and Optimus Prime were selected in aruhorqin banner,Inner Mongolia. Sowing was started on July 1,and every 5 days,10 sowing dates in total. The relationships among sowing date,production performance and overwintering rate were analyzed. The results showed that the later the alfalfa was sown,the lower the yield was,Knight T hay yield decreased significantly on July 21 (P<0.05),Gongnong 1 hay yield decreased significantly on July 16 (P < 0.05),and Optimus Prime hay yield decreased significantly on July 11 (P<0.05);With the delay of sowing time,the plant height and single branch weight of Alfalfa decreased,and the number of plants and branches per unit area increased first and then decreased;The Overwintering Rate of Alfalfa decreased significantly from July 16,and that of Gongnong 1 was significantly higher than that of Knight T and Optimus Prime before July 16 (P<0.05)；The yield and plant height of the first crop of Alfalfa decreased with the delay of sowing time,but there was no significant change in the second and third crop;The number of plants and branches per unit area of Alfalfa decreased with the delay of sowing date,With the increase of cutting stubble times,the number of alfalfa plants decreased gradually. Therefore,the best sowing time of Alfalfa in Horqin sandy land is from July 1 to July 16.

Key words: Alfalfa, Sowing dates, Production performance, Overwintering Rate

摘要： 为确定科尔沁沙地种植苜蓿（Medicago sativa）的适宜播期，本研究于2017年在内蒙古阿鲁科尔沁旗，选择骑士T、公农1号、擎天柱3个紫花苜蓿品种，7月1日开始播种，每5天播种1期，共10个播期，分析播期、生产性能、越冬率之间的关系。结果表明：建植当年苜蓿播种越晚干草产量越低，骑士T干草产量在7月21日播期显著降低（P<0.05），公农1号干草产量在7月16日播期显著降低（P<0.05），擎天柱干草产量在7月11日播期显著降低（P<0.05）；随播种时期的推迟，苜蓿株高、单枝条重呈降低的变化趋势，单位面积株数和枝条数呈先增加后降低的变化趋势；苜蓿越冬率从播期7月16日开始显著降低，公农1号在7月16日以前播种越冬率显著高于骑士T和擎天柱（P<0.05）；播种翌年第1茬苜蓿干草产量和株高随着播期的推迟而逐渐降低，2，3茬则无明显变化；苜蓿单位面积株数和枝条数都随播期的推迟呈降低的变化趋势，随着刈割茬次的增加，苜蓿的株数逐渐降低。因此，在科尔沁沙地种植紫花苜蓿最佳播期为7月1日—7月16日。

关键词: 紫花苜蓿, 播期, 生产性能, 越冬率

CLC Number:

S963.22+3.3

TIAN Yong-lei, WANG Xian-guo, ZHANG Yu-xia, ZHANG Shang-xiong, JING-Zhao, CONG Bai-ming, MU Zong-jie, BAI Chun-li. Effects of Different Sowing Dates on Alfalfa Production Performance and Overwintering Rate in Sandy Land[J]. Acta Agrestia Sinica, 2020, 28(2): 538-546.

田永雷, 王显国, 张玉霞, 张尚雄, 荆照, 丛百明, 慕宗杰, 白春利. 沙地生境不同播期对紫花苜蓿生产性能及其越冬率的影响[J]. 草地学报, 2020, 28(2): 538-546.

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Effects of Different Sowing Dates on Alfalfa Production Performance and Overwintering Rate in Sandy Land

沙地生境不同播期对紫花苜蓿生产性能及其越冬率的影响

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