不同秋眠级苜蓿品种在天山北坡农业区的生长与生产性能比较  

Comparative analysis of growth and production performance among alfalfa varieties with different fall dormancy classes in the agricultural region of northern Tianshan Mountains

作　　者：李陆斌 艾比布拉·伊马木 哈里木拉提·努热合买提 万江春 林盛锐 LI Lu-bin;AIBIBULA Yimamu;HALIMULATI Nurehemaiti;WAN Jiang-chun;LIN Sheng-rui

机构地区：[1]新疆农业大学草业学院,新疆乌鲁木齐830052 [2]新疆天博草业有限公司,新疆乌鲁木齐830052

出　　处：《饲料研究》2024年第21期130-137,共8页Feed Research

基　　金：新疆维吾尔自治区科学技术厅自治区重点研发计划项目(项目编号:2022B02042-2)。

摘　　要：研究旨在揭示不同秋眠级(FD)紫花苜蓿(Medicago sativa L.)在新疆天山北坡农业区的生长特性和生产性能。选取了3~6级的8个品种,对其越冬率、光合特征、生产力与营养品质进行了比较研究。结果显示,秋眠级为6的品种WL440HQ与龙威6010表现出更早的返青期。各秋眠级的紫花苜蓿品种越冬率均维持在95%以上,秋眠6级品种在总鲜草产量、叶绿素含量、光合速率等方面展现出显著优势(P<0.05)。在粗蛋白含量方面,秋眠级为3级的WL319HQ表现最优。此外,4级秋眠的新牧4号与滴灌之星在中性洗涤纤维和酸性洗涤纤维含量上表现较低,相对饲喂价值较高。紫花苜蓿的秋眠级与植株株高、鲜草产量、干草产量、光合速率、中性洗涤纤维含量呈极显著正相关(P<0.01),与再生速度及水分利用效率的关系显著正相关(P<0.05)。结果表明,秋眠级为6级的紫花苜蓿品种适宜在新疆天山北坡农区种植。This study aimed to elucidate the growth characteristics and production performance of different fall dormancy(FD)classes of alfalfa(Medicago sativa L.)in the agricultural region of the northern slope of Tianshan Mountain in Xinjiang,China.Eight varieties spanning FD classes three through six were selected and encompassed a comparative investigation for their overwintering survival rate,photosynthetic traits,productivity and nutritional qualities.The results showed that FD class 6 varieties WL440HQ and Longwei 6010 exhibited earlier green-up periods.Across all FD classes,alfalfa varieties maintained overwintering rates above 95%,with class six varieties demonstrating significant advantages(P<0.05)in total fresh forage yield,chlorophyll content,and photosynthetic rate.In terms of crude protein content,the FD class three variety WL319HQ outperformed others.Moreover,the FD class four varieties Xinmu No.4 and Drip Irrigation Star had lower contents of neutral detergent fiber(NDF)and acid detergent fiber(ADF),thus presenting higher relative feed value.A highly significant positive correlation was found between alfalfa's FD class and plant height,fresh forage yield,dry matter yield,photosynthetic rate,and NDF content(P<0.01).Additionally,there was a significant positive relationship(P<0.05)between FD and regrowth rate as well as water use efficiency.The study indicates that FD class six alfalfa varieties are well-suited for cultivation in the agricultural region of the northern Tianshan Mountains in Xinjiang.

关 键 词：紫花苜蓿 秋眠级 草产量 光合速率 

分 类 号：S816[农业科学—饲料科学]