几个青贮玉米品种在云南宣威的适应性研究

通过在云南省宣威市对夏播的16个青贮玉米（Zeamags）进行品种筛选试验，并对其生育期、适应性、生物产量和植株营养成分进行分析，最后筛选出适宜宣威夏播的青贮玉米品种有：云优78，鲜草产量可达到2092．69kg／667m^2，干物质产量可达到511．34kg／667m^2，粗蛋白含量为8．69％，粗脂肪含量为1．55％，粗纤维含量为23．90％，粗灰分含量为5.30％，无氮浸出物含量为55．86％；云优21，鲜草产量可达到1855．93kg／667m^2，干物质产量可达到494．64kg／667m^2，粗蛋白含量为9．84％，粗脂肪含量为1．62％，粗纤维含量为24．80％，粗灰分含量为5．20％，无氮浸出物含量为53．14％。

Research on Adaptability of Several Varieties of Silage Maize in Xuanwei of Yunnan Province

Through screening test of variety, the growth duration, adaptability, biological output and nutrition ingredient about 16 kinds of silage maize seeded in summer in the city of Xuanwei of Yunnan Province were analysed. The results showed that the varieties of Silage maize which had good adaptability to Xuanwei included Yunyou 78, its biological output was 2092.69 kg/667m^2, DM was 511.34 kg/667m^2, CP was 8.69%, EE was 1.55%, CF was 23.90%, Ash was 5.30%; NND was 55.86%; Yunyou 21, its biological output was 1855.93 kg/667m^2, DM was 494.64 kg/667m^2, CP was 9.84%, EE was 1.62%, CF was 24.80%, Ash was 5.20%, NND was 53.14%.