Evaluation of Production Performance and Nutritional Value of Eight Alfalfa Varieties in the Hot-Arid Zone
This study aimed to select suitable alfalfa varieties for cultivation in tropical and subtropical areas.The production performance and nutritional value of eight alfalfa(Medicago sativa)varieties intro-duced in 2017 were evaluated in the hot-arid zone in Yuanmou area using variance and grey relational analy-ses.The results showed as follows:(1)All test alfalfa varieties grew well and could withstand winter,with a growth period ranging from 205 to 215 d.(2)WL525HQ had the highest plant height compared to Victoria,Deqin,Sadie 7,and WL712HQ(P<0.05),reaching 70.20 cm.WL656 had the highest pri-mary branch number,with 27.20 branches.While the primary branch number of WL712HQ was signifi-cantly different from that of G8(P<0.05).Furthermore,WL712HQ had the highest stem-leaf ratio com-pared to Deqin and Sadie 7,with a value of 1.10.Sadie 7 had the highest annual hay yield,which was sig-nificantly higher than that of Deqin(P<0.05).The annual hay yield of Sadie 7 in 2018,2019,2020,and over three years was 34217.40 kg/hm2,32527.55 kg/hm2,22024.93 kg/hm2,and 29589.96 kg/hm2,respectively.All test alfalfa varieties can be mowed 8 times per year in 2018 and 2020,and nine times in 2019.(3)The protein and total phosphorus contents of Deqin were significantly than those of other variet-ies(P<0.05),with values of 21.43%and 0.25%,respectively.The crude fiber content of WL903 was significantly higher than that of other varieties(P<0.05),with a value of 23.51%.(4)Through grey rela-tional analysis,the top 3 of the 8 alfalfa varieties was Sadie 7,WL525HQ,Victoria.These findings indicate that these three varieties are suitable for planting in the hot-arid zone areas.
万方数据
维普
