摘要： 试验研究了不同饲用高粱品种植株物质生产特性及其在呼和浩特地区的生态适应性。结果表明:不同品种生育进程存在较明显差异,其中健宝、乐食、牧特利、标兵不能够正常抽穗开花,因此不能成熟。不同饲用高粱品种的株高、可见叶和展开叶片数均呈"S"型曲线变化,株高以蒙农青饲1号增长速度较快,牧特利最慢,8月19日之后各品种的株高陆续达到最大值,以苏波丹的株高为最高,达到277cm,牧特利最低,为175cm;牧特利的可见叶和展开叶片数增加速度最快,平均主茎叶片数最多,为18.8片:健宝最慢,平均主茎叶片数最少,为13.8片。饲用高粱的茎叶比呈"双峰"曲线变化,叶鲜干比和茎鲜干比均呈"单峰"曲线变化,各供试品种叶鲜干比峰值均出现在6月24日前后。在全生育期,饲用高粱的鲜草产量呈单峰曲线变化,各品种鲜草产量的峰值出现在9月12日前后,以牧特利最高,为72801kg/hm²;苏波丹最低,为42464kg/hm²。各品种干草产量以蒙农青饲1号为最高,乐食最低。

关键词: 饲用高粱, 植株形态, 物质生产特性

Abstract: The characteristic with the plant material produce of the breed of the different Forage Sorghum,and its ecosystem adaptability in the huhtrot was researched. Tlre result demonstrated: tire growth progress about the different brc}:}l had the existence of significant difference. Among then:Jumbo,Everlush,Muteli,Pacemaker can't take out the flower' from the spike normally, therefore can't be mature. Tlre plant height, the Mengnong Qingsi No.l most quickly, the Muteli most slowly, the uuml>crof the clear leaf and the spread leaf of the different bread of Forage Sorghum changed following the curve of "S". After August 19th,the stub highness of the different breed reached the maximum respectively in succession, the Superdan highest,277cm, the Muteli shorter, TheSUmber of the clear and spread leaf of the Muteli increa,dmost quickly.the leaf in the caulis was at most, l R.8 slices; the Jumbo slowest, the leaf in the caulis at least,13.8 slices. The ratio of the stalk and leaf of Forage Sorghum changed following the double peak curve, and the ratio of fresh and chy leaf single peak, the peak value on June 24th around. At all generational progress, the yield of fresh grass changed following sine peak curve and the peak value of each breed appearing on Sept.l2th around, the Muteli for 7280tks/hMengnongrrr at mostqings No.lfor 42.464km at least. Among each breed, the yield of hay of theat most, the Everlush, at least.

中图分类号: 

• S514