论文部分内容阅读
对扁穗牛鞭草在我国的野生种分布进行深入调查表明,在四川、重庆分布有广泛的不同生态型的野生扁穗牛鞭草资源。以其中19份野生扁穗牛鞭草为供试材料,对其株高、分蘖、茎叶比、干物质重量、粗蛋白质含量等农艺性状进行初步的数量化研究表明,多数扁穗牛鞭草适合做牧草并极具培育优良新型牧草品种的潜力。经测定,大邑生态型扁穗牛鞭草和草坝生态型扁穗牛鞭草表现出植株高大、茎粗壮、叶量丰富、干物质含量高等许多牧用性饲草的优良特点,特别是草坝生态型扁穗牛鞭草的粗蛋白质含量比重高牛鞭草高约3.0%,所以,它有望成为优良的扁穗牛鞭草新品种。综合聚类显示,所有材料可分为四大类型,每个类型在饲用特性方面都有所差异,为不同目的的进一步筛选和利用及为加快我国扁穗牛鞭草种质资源的开发和利用以及改良其人工草地提供了较为科学的依据。
An in-depth investigation of the distribution of wild species of Hemarthria compressa in our country shows that there are a wide range of wild Hemarthria resources in different ecological types in Sichuan and Chongqing. Ninety-nine wild Hemarthria compressa were used as experimental materials to preliminary quantify agronomic traits such as plant height, tiller, stem-leaf ratio, dry matter weight and crude protein content. The results showed that most of the Hemarthria compressa Suitable for forages and great potential for cultivating fine new forage varieties. It has been determined that the eco-type Hemarthria compressa and Daya Ecotype Hemarthria macrophylla in Dayi show the excellent characteristics of many pasture forage plants with tall plants, thick stalks, abundant leaves, and high dry matter content. In particular, The herbaceous ecotype Hemarthria compressa has the highest crude protein content of about 3.0%, so it is expected to be a good new strain of Hemarthria compressa. Comprehensive clustering shows that all the materials can be divided into four types, each of which has different characteristics in feeding, further screening and utilization for different purposes, and in order to speed up the development of Hemarthria compressa germplasm resources in China Use and improve their artificial grass provide a more scientific basis.