不同秋眠级美国紫花苜蓿材料在安徽地区的引种试验

Introduction of American alfalfa materials with different fall dormancy in Anhui Province

摘要:

为筛选适宜在安徽沿淮及周边地区种植的不同秋眠级紫花苜蓿品种,对来自美国的7个不同秋眠级紫花苜蓿品种进行连续三年的田间比较试验,测定其干草产量(DM)、粗蛋白含量(CP)、中性洗涤纤维含量(NDF)、酸性洗涤纤维含量(ADF),计算相对饲用价值(RFV),调查物候期和越冬率。通过统计分析得出,秋眠级越高的紫花苜蓿品种春季返青越早;6010、巨能6、巨能995品种越冬性最好;3年平均NDF和ADF含量最低的是叶不落,分别为37.80%和30.03%,其3年平均RFV值最高,为161.78%,极显著高于其他紫花苜蓿品种。综合CP含量和干草产量,最优紫花苜蓿品种为叶不落,其次是品种WL343和WL656,以上3个品种适宜在安徽沿淮及周边地区种植推广。

Abstract:

To screen alfalfa cultivars suitable for planting along Huaihe River and its surrounding areas in Anhui Province,this study investigated the production performance and overwintering rate of seven different alfalfa cultivars originated from the United States with different autumn dormancy grades over three years between 2018~2020 in field.Hay yield (DM),crude protein content (CP),neutral detergent fiber content (NDF),acid detergent fiber content (ADF) and the relative feeding value (RFV) were determined.Phenology and overwintering rate were recorded.Our results showed that the higher the fall dormancy level,the earlier plants turn green in spring.Alfalfa cv.6010,Juneng 6 and Juneng 995 had the best overwintering ability.Alfalfa cv Leaf-free had the lowest contents of NDF (37.80%) and ADF (30.03%) over three years,while its mean RFV values was highest (161.78%),being significantly higher than the other alfalfa cultivars.Alfalfa cv Leaf-free was the best giving its CP content and hay yield,followed by WL343 and WL656.Those three cultivars would be suitable for planting along Huaihe River and its surrounding areas in Anhui Province.