摘要
对银川地区引种5年的饲用型四倍体刺槐主要饲用特性进行了研究.结果表明,四倍体刺槐在银川地区生育期为185 d左右,栽植当年生长速度1.42 cm/d,地径平均达3 cm,越冬率达90%,基本无病虫害发生;叶量丰富,叶片肥大,再生速度快,平均为1.10 cm/d,平均再生强度为13.94 g/d.m2,表现出良好的再生性能;年666.7 m2产干草1 552.91 kg,叶的比例高于枝,粗蛋白平均达31.18%、粗脂肪3.85%、粗纤维23.53%、粗灰分9.08%,均达到或超过优良饲草的标准.
Some main feed characteristics of tetraploid Black locust for feed that had been planted five years in Yinchuan region were studied.The results showed that growth period of tetraploid Black locust for feed was about 185d in Yinchuan region.Growth speed was 1.42cm/d,and diameter near ground reached 3cm in planted year.Hibernation rate was 90% and there happed little plant diseases and insect pests.Tetraploid Black locust had lots of leaves yield and hypertrophy leaves.It has a rapid regrowth speed and average regrowth speed could reach 1.10cm/d.The average re-growth intensity was 13.94g/d·m2 and tetraploid Black locus for feed was possessed of strong reproducibility.Tetraploid Black locus for feed yield of dry pasture reached 1552.91kg/667m2.The proportion of leaf in yield was higher than shoot.Average crude protein content of tetraploid Black locust for feed reached 31.18% in whole plant.EE,CF,and CASh reached 3.85%,23.53% and 9.08%.The nutritional component had amount or approach good forage grass standard.
出处
《农业科学研究》
2011年第2期1-4,共4页
Journal of Agricultural Sciences
关键词
饲用型四倍体刺槐
饲用特性
银川地区
tetraploid Black locus for feed t
feed characteristics
Yinchuan region
