通过利用优质的资源、采取籼粳杂交育种方法能够选育出产量高，同时米质亦好的籼稻和粳稻品种。

By using excellence resources and indica-japonica cross method, the rice variety with high yield and good quality could be developed.

youdao

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.

youdao

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.

youdao