在农业生产集约化经营条件下,对多年生牧草品种质量提高了要求。每个新品种的综合经济性状应适合于现代化的需要。育种学家在培育新品种时特别注意利用植物的自然基因资源和各种方法改变基因类型的现代遗传科学成就来取得原始材料,其中包括生物技术。 Under the conditions of intensified agricultural production, the quality of perennial grasses has been raised. The comprehensive economic traits of each new variety should be adapted to the needs of modernization. When nurturing new varieties, breeders pay special attention to the use of the natural genetic resources of plants and the ways in which modern genetic sciences can alter the genotypes to obtain raw materials, including biotechnology.