异时萌发对旱麦草属4种牧草生长与品质的影响  

The Effect of Heterochronic Germination on the Growth and Quality of Four Forage Species in the Eremopyrum

作　　者：王玲秀 邵帅 娄亚桦[1] WANG Ling-xiu;SHAO Shuai;LOU Ya-hua(College of Grassland Science,Xinjiang Agricultural University,Urumqi,Xinjiang 830052,China;Key Laboratory of Grassland Resources and Ecology of Western Arid Region,Ministry of Education,Urumqi,Xinjiang 830052,China;Key Laboratory of Grassland Resources and Ecology of Xinjiang,Urumqi,Xinjiang 830052 China)

机构地区：[1]新疆农业大学草业学院,新疆乌鲁木齐830052 [2]西部干旱荒漠区草地资源与生态教育部重点实验室,新疆乌鲁木齐830052 [3]新疆草地资源与生态重点实验室,新疆乌鲁木齐830052

出　　处：《草地学报》2024年第2期495-502,共8页Acta Agrestia Sinica

基　　金：新疆维吾尔自治区自然科学基金项目(2019D01A53)资助。

摘　　要：为探究旱麦草属(Eremopyrum)4种牧草春萌株与秋萌株生长与品质的差异,采用盆栽试验,测定生长与品质指标,并运用灰色关联法进行综合评价。结果发现:4种牧草秋萌株的茎粗、分蘖与地下生物量大于春萌株,秋萌毛穗旱麦草(E.distans)株高(9.13 cm)和生物量(地上鲜重为131.93 g·m^(-2),地下鲜重为202.95 g·m^(-2))最大;秋萌光穗旱麦草(E.bonaepartis)茎粗(2.22 mm)和分蘖数(3.68)最大;除毛穗旱麦草以外,其他3种牧草秋萌株的相对饲用价值均低于春萌株;秋萌旱麦草(E.triticeum)粗蛋白含量显著低于春萌株,其他3种牧草无显著差异;秋萌光穗旱麦草粗脂肪含量显著低于春萌株,其他3种牧草无显著差异;灰色关联度排序显示除毛穗旱麦草外,其他3种牧草春萌株的综合排名均高于秋萌株,春萌光穗旱麦草加权关联度最高,但关联度总体差异不大。旱麦草属4种牧草具有较优的品质,春萌株可在春季补饲中发挥更大的作用。To explore the differences in growth and quality between spring-germinated plants and autumn-germinated plants of four forage Eremopyrum species,a pot experiment was conducted to determine various growth and quality indicators,and a comprehensive evaluation was conducted using the grey correlation method.The results showed that:(1)The stem diameter,tiller number,and underground biomass of four species in autumn-germinated plants were greater than those in spring-germinated plants,and autumn-germinated E.distans had the highest plant height(9.13 cm)and biomass(aboveground fresh weight:131.93 g·m^(-2).Underground fresh weight:202.95 g·m^(-2)).The stem diameter(2.22 mm)and tiller number(3.68)of autumn-germinated E.bonaepartis are the highest.(2)Except for E.distans,the relative feed value of autumn-germinated plants of the other three forage grasses was lower than that of spring-germinated plants;the crude protein of autumn-germinated E.triticum was significantly lower than that of spring-germinated plants,and there was no significant difference among the other three forage grasses;the ether extract of autumn-germinated E.bonaepartis was significantly lower than that of spring-germinated plants,and there was no significant difference among the other three forage grasses.(3)The grey correlation ranking of spring-germinated plants is higher than that of autumn-germinated plants,except for the E.distans.The weighted correlation degree of spring-germinated E.bonaepartis is the highest,but the overall difference in the correlation degree of the four forage grasses is not significant.Four species of Eremopyrum have better quality,and especially the spring-germinated plants can play a greater role in supplementary feeding in spring.

关 键 词：旱麦草属 异时萌发 生长 牧草品质 综合评价 

分 类 号：S544[农业科学—作物学]