榆林风沙草滩区不同紫花苜蓿品种生产性能及营养品质的综合评价研究OA

In order to select the alfalfa varieties suitable for planting and promotion in the sandy grassy beach area of Yulin,this experiment comprehensively evaluated the produc-tion performance and nutritional quality of 10 alfalfa varie-ties.The results showed that the fresh grass yield and hay yield of Zhongmu No.2 and WL343 varieties were higher in each crop.The plant height of Zhongmu No.2,WL343 and Juneng 551 varieties were higher in each crop.Compared with other alfalfa varieties Jin Queen,the stem thickness is thic-ker.The ratio of stem and leaf after Zhongmu No.2,Juneng 551 and Jin Queen were smaller in each crop.The three varie-ties Zhongmu No.2,WL343 and Jin Queen showed faster growth rate in each crop.The crude protein content of Zhong mu No.2 and Gannong No.3 in each crop was significantly higher than that of other alfalfa varieties(P＜0.05).The crude fat content of Zhongmu No.2 and Jin Queen was signif-icantly higher than that of other alfalfa varieties on the whole(P＜0.05).The crude ash content,neutral detergent fiber content and acid detergent fiber content of Zhongmu 2,WL343,Jin Queen and Gannong 3 were significantly lower than those of other alfalfa varieties on the whole(P＜0.05).Compared with other alfalfa varieties,Zhongmu No.2,WL343 and Jin Queen had higher feeding value.It was also found that the production performance and nutritional quality of each alfalfa variety decreased significantly with the increase of cutting times(P＜0.05).The results of comprehensive e-valuation showed that the production performance and nutri-tional quality of Zhongmu No.2 alfalfa were the best,fol-lowed by WL343 and Jin Queen,indicating that these three alfalfa varieties could be widely cultivated in Yulin area.