13个紫花苜蓿品种在沧州盐碱地的生产性能和营养价值  

Comparison and analysis of production performance and nutritional value of 13 alfalfa varieties in the Cangzhou saline-alkali area

作　　者：刘艳昆[1] 王佳文[1] 王静[1] 张伟燕[1] 付晶[1] 王洪芳[1] 武守朝[1] 肖宇[2] LIU Yankun;WANG Jiawen;WANG Jing;ZHANG Weiyan;FU Jing;WANG Hongfang;WU Shouchao;XIAO Yu(Cangzhou Technical College,Cangzhou 061000,Heibei,China;Cangzhou Academy of Agriculture and Forestry Sciences,Cangzhou 061000,Heibei,China)

机构地区：[1]沧州职业技术学院,河北沧州061000 [2]沧州市农林科学院,河北沧州061000

出　　处：《草业科学》2023年第7期1823-1832,共10页Pratacultural Science

基　　金：河北省省级科技计划项目(21326618D)。

摘　　要：为筛选出适合沧州盐碱地种植及营养价值高的紫花苜蓿(Medicago sativa)品种,本研究以13个紫花苜蓿品种为试验材料,连续4年(2018-2021年)观测其茎叶比、株高和干草产量,并应用近红外光谱技术测定分析9个营养性状指标。结果表明:‘WL363HQ’的叶量丰富,茎叶比最低;‘WL298HQ’的株高平均值最大,但与‘MF4020’‘中苜3号’和‘耐盐之星’之间差异不显著(P>0.05);‘中苜3号’干草产量最高,4年平均值为14092.65 kg·hm^(−2),粗蛋白、粗灰分、磷和干物质体外30h消化率在参试品种中也最高,分别为26.57%、10.43%、0.44%和81.98%;‘康赛’的粗脂肪和钙含量最高,分别为2.33%和1.96%,酸性洗涤纤维和中性洗涤纤维含量最低,分别为27.93%和33.20%;‘耐盐之星’的可消化中性洗涤纤维体外30 h消化率最高,为24.46%。‘MF4020’各项指标均处于中等水平。灰色关联度综合评价结果表明,‘中苜3号’‘康赛’和‘MF4020’表现优异,适宜在河北沧州盐碱地区推广种植。A comparative field performance and nutritional value experiment of 13 alfalfa varieties was conducted from 2018-2021 to select Medicago sativa varieties suitable for the Cangzhou saline-alkali area.In this study,the stem-to-leaf ratio,plant height,hay yield,and nine indicators of nutritional value were measured for four consecutive years using near-infrared reflectance spectroscopy.Then the dataset was analyzed using the grey correlative system to assess varieties comprehensively.Results showed that‘WL363HQ’had many leaves,and its stem-to-leaf ratio was the lowest.The plant height of‘WL298HQ’was the highest.There was no significant difference between‘MF4020’,‘Zhongmu No.3’,and‘Magnum-salt’(P>0.05).The hay yield of‘Zhongmu No.3’was the highest,with an average of 14092.65 kg·ha^(−1) over four years.The contents of crude protein,crude ash,and phosphorus of‘Zhongmu No.3’were the highest at 26.57%,10.43%,and 0.44%,respectively.The value of in vitro dry matter digestibility of‘Zhongmu No.3’was the highest at 81.98%.The crude fat and calcium contents of‘Concept’were the highest at 2.33%and 1.96%,respectively.The acid detergent fiber and neutral detergent fiber contents of‘Concept’were the lowest at 27.93%and 33.20%.The digestible neutral detergent fiber content of‘Magnum-salt’was the highest at 24.46%.All indicators of‘MF4020’were close to the average values.The comprehensive analysis results show that‘Zhongmu No.3’,‘Concept’,and‘MF4020’performed the best in the Cangzhou saline-alkali area,with the potential for more extensive use as a pasture crop in the region.

关 键 词：紫花苜蓿 生产性能 营养价值 近红外光谱 灰色关联度 沧州 盐碱地 

分 类 号：S541.9[农业科学—作物学]