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批量进口国外高纤品种，对提高企业经济效益确实有效。而功省效宏的办法是少量 引进种源，自己提纯，扶壮扩繁。
Bulk imports of foreign high-fiber varieties, to improve the economic efficiency of enterprises really effective. The method of saving energy is a small amount of introduction of provenance, their purification, Zhuangzhuang proliferation.