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《Acta Prataculturae Sinica》 2010-01
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A study on the introduction and cultivation of American alfalfa in semi-humid area

YANG Hong-shan1,CHANG Gen-zhu1,ZHOU Xue-hui1,MIAO Xiao-lin1,LU Yuan1,WANG Yong-lin2(1.Lanzhou Institute of Animal and Veterinary Pharmaceutics Sciences,CAAS,Lanzhou 730050,China;2.Testing Station for Gangu County,Tianshui Agricultural Institute of Gansu Province,Tianshui 741200,China)  
Alfaking,Fields,Pyramid,Reward,Simplot2000,Norva,Hopeland,Multifoliator,Leafking were introduced from American by Lanzhou Institute of Animal and Veterinary Pharmaceutics Sciences,CAAS.These alfalfa species are new American breeds which will be put into the Asian market in the next few years.After completing district tests in arid and semi-arid areas,we cultivated the varieties in a semi-humid area in 2008.Nine introductions of alfalfa grew normally in the semi-humid area and completed all the reproductive cycle with no problems,including no plant diseases and insect pests.An analysis of reproductive periodicity,nutrition component,speed of growth and stem/leaf ratios,showed the daily growth of Fields was 1.47 cm/d and the stem/leaf ratio was 0.7.The daily growth of Alfaking was 1.39 cm/d,and the thick albumen content was 17.57%.The daily growth of Zhonglan No.1 was 1.22 cm/d,with a thick albumen content of 19.58%.Fields,Alfaking,Multifoliator and Zhonglan No.1 were the best varieties.These nine American alfalfas can be cultivated in arid areas,loess altiplano semi-arid areas,and semi-humid areas.They can also be used in homologous areas in the north of China.
【Fund】: 国家科技支撑计划——西北优势和特色牧草生产加工关键技术研究与示范子课题-3(2007BAD52B06-3);; 中央级公益性科研院所基本科研业务费专项资金项目(中国农业科学院兰州畜牧与兽药研究所)(BRF100202)资助
【CateGory Index】: S541.9
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