【编者按】牧草和饲料作物是重要的草业生产资料，其良种是草地畜牧业第一性生产发展诸要素中最积极最富有成效的因素。因此，面对我国退化日趋严重的草地资源和不断恶化的草地环境，要实现草地畜牧业的全面进步和持续发展，通过应用生物高新技术培养能适应改变了的草地环... 【Editor’s note】 Forage and forage crops are important grass-producing means of production. Their good variety is the most active and productive factor in the primary production and development of grassland husbandry. Therefore, in the face of the deteriorating grassland resources and deteriorating grassland environment in our country, we must realize the all-round progress and sustainable development of pasture husbandry in the grassland and cultivate a grassland ring that can adapt to the changes by applying high and new technology of biology.