接种根瘤菌对不同品种紫花苜蓿生产性能及营养价值的影响评价

Assessment of the Impact of Rhizobial Inoculation on Production Performance and Nutritional Value of Different Varieties of Purple Alfalfa

摘要:

对甘农3号、三得利、旱地、WL343、巨能601、威神等6个紫花苜蓿（Medicago sativa）品种开展根瘤菌接种试验，以越冬率、分枝数、株高、干草产量、粗蛋白、酸性洗涤纤维、中性洗涤纤维、相对饲喂价值等为评价指标，采用灰色关联法分析行评价接种根瘤菌对紫花苜蓿生产性能及营养价值的影响。结果表明：接种根瘤菌可显著提高紫花苜蓿品种的越冬率、株高、干草产量和粗蛋白含量（P＜0.05)，对紫花苜蓿的分枝数、酸性洗涤纤维、中性洗涤纤维、相对饲喂价值的影响不显著（P＞0.05)，可促进紫花苜蓿提前接瘤，促进提高苜蓿产量和饲草品质，是提高苜蓿产草量和饲草品质的有效措施，可大面积推广应用。

Abstract:

In this study, six alfalfa (Medicago sativa) varieties including Gannong 3, Suntory, Handi, WL343, Juneng 601, and Weishen were tested for rhizobia inoculation. We use overwintering rate, number of branches, plant height, hay yield, crude protein, acid detergent fiber, neutral detergent fiber, relative feeding value, etc. as evaluation indicators. We used the gray relational method to analyze and evaluate the effect of rhizobia inoculation on the performance and nutritional value of alfalfa. The results showed that the inoculation of rhizobia could significantly improve the overwintering rate, plant height, hay yield and crude protein content of alfalfa varieties (P< 0.05). This had no significant effect on the number of branches, acid detergent fiber, neutral detergent fiber, and relative feeding value of alfalfa (P> 0.05). This can promote early tumor inoculation of alfalfa, and promote the improvement of alfalfa yield and forage quality. This is an effective measure to improve the grass yield and forage quality of alfalfa, and can be popularized and applied in a large area.