Jia Xitao, Zhang Zhixin, Wang Yanrong
State Key Laboratory of Grassland Agro-Ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China.
College of Grassland Agriculture, Northwest A&F University, Yangling 712100, China.
Plants (Basel). 2022 Apr 20;11(9):1112. doi: 10.3390/plants11091112.
An increasing demand for new and improved livestock forage products is driving the development of forage systems in arid regions. Our study evaluated the productivity of 10 alfalfa ( L.) varieties and the relationship between forage yield and canopy structure traits, such as plant height, branch number, stem/leaf ratio, and leaf area index in the arid Hexi Corridor, north-west China. Here, plant height, primary branch number per plant, and stem/leaf ratio were positively correlated with forage yield. In terms of a two-year total yield, Gannong No. 5 produced the highest value (13,923 kg ha), followed by the WL342HQ (12,409 kg ha), Phabulous (11,928 kg ha), and Xinjiang Daye (11,416 kg ha) varieties. Therefore, these four alfalfa varieties are suitable for large-scale cultivation in the Hexi Corridor region and other arid areas where the effect of precipitation is even larger than that of temperature. These results provide valuable information for the selection and cultivation of alfalfa varieties, which could improve forage yield and the production of livestock in arid regions.
对新型优质家畜饲料产品的需求不断增加，推动了干旱地区饲料系统的发展。我们的研究评估了10个苜蓿品种在干旱的中国西北河西走廊地区的生产力，以及饲料产量与冠层结构性状之间的关系，这些性状包括株高、分枝数、茎/叶比和叶面积指数。在此，株高、单株一级分枝数和茎/叶比与饲料产量呈正相关。就两年总产量而言，甘农5号产量最高（13923千克/公顷），其次是WL342HQ（12409千克/公顷）、法布罗斯（11928千克/公顷）和新疆大叶（11416千克/公顷）品种。因此，这四个苜蓿品种适合在河西走廊地区以及其他降水影响甚至大于温度影响的干旱地区大规模种植。这些结果为苜蓿品种的选择和种植提供了有价值的信息，有助于提高干旱地区的饲料产量和家畜生产。
