项目：新研发的加拿大优质高粱和珍珠小米杂交良种饲料草的引进和推广，用以提高中国的牛奶和肉类生产。
Profile: Introduction and promotion of Canadian technology of newly developed forage high feed quality sorghum and pearl millet hybrid to enhance milk and meat production in China.
已有多种方法被用于提高地方良种的性能，包括杂交育种，以及通过与良种的回交和品系内选育进行的品种改良。
Various approaches have been used to improve the performance of adapted indigenous stock, including cross-breeding and upgrading through back-crossing with improved breeds, and within-line selection.
至于杂交培育良种的问题，你可以去请教李同志。
When it comes to cross breeding for better strains, Li is the comrade you should consult.
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