摘要
为探讨高秋眠级紫花苜蓿(Medicago sativa)不同品种间混播对其产量、品质、根系及株高等指标的影响,对品种WL712、WL903和WL656与南方地区推广种植的WL525进行混播试验。结果表明:1)混播组合的粗蛋白产量与单播WL525间没有显著差异(P>0.05),但高于其他的品种单播;2)混播组合的株高虽然没有显著提高,但纤维含量有所减少,纤维含量随着刈割茬次的增加呈现递减趋势;3)混播组合的根颈分枝数和根颈直径生长指标较单播有优势;4)混播组合中WL656∶WL525=1∶4和WL712∶WL525=1∶2组合的总干草产量最高,达到14.67t·hm-2,营养品质达到特级紫花苜蓿干草标准,全年生长情况较其他组合好,是可以进一步追踪研究的品种间混播组合。综合而言,不同比例紫花苜蓿品种间混播可提高牧草品质,促进根系生长。
In order to investigate the effects of mixed sowing of different alfalfa varieties on their yield,quality,root system,and height,a mixed sowing experiment was conducted using WL712,WL903,WL656,and WL525,which was widely cultivated in the southern region.The results showed that although the amount of crude protein of the mixed sowing alfalfa did not exceed that of the unicast WL525,which was also used in mixed sowing,it was better than that of other unicast varieties also used in mixed sowing.Although plant height showed no significant increase,fiber content showed a decreasing trend with the increase of mowing times.The number of root neck branche and root neck diameter were better in mixed sowing than in unicast sowing.The total hay yields of WL656∶WL525=1∶4 and WL712∶WL525=1∶2 were the highest in all mixed sowing combinations,up to 14.67 t·ha^-1,and the nutritive quality reached the premium alfalfa hay standard.Their annual growth was better than that of others,and it was possible to further trace the interspecific combination of research.In general,mixed sowing of alfalfa varieties with different proportions can improve forage quality and promote root growth.
作者
陈菲
穆麟
文昭竹
张志飞
魏仲珊
Chen Fei;Mu Lin;Wen Zhao-zhu;Zhang Zhi-fei;Wei Zhong-shan(Agronomy College of Hunan Agricultural University,Changsha 410128,Hunan,China;Hunan Deren Animal Husbandry Technology Co.LTD,Changde 415921,Hunan,China)
出处
《草业科学》
CAS
CSCD
2018年第7期1734-1742,共9页
Pratacultural Science
基金
国家重点研发计划项目(2017YFD0502104)
湖南省研究生科技创新项目(CX2016B290)
关键词
紫花苜蓿
品种
混播组合
产量
营养品质
根系
株高
alfalfa
variety
mixed sowing combination
yield
nutrient quality
root
plant height
