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1991－1993年，30个割手密，11个斑茅和12个野生F1代无性系经过13—13．5h的长日照处理后，可延迟花期最长达93—118天。利用延迟开花材料在开远首次获得具云南珍贵野生血缘的F1代杂交花穗和大量实生苗。结果表明，长日照可有效地延迟野生资源开花，达到调节花期的目的，这为甘蔗野生资源的利用，解决杂交花期不遇的技术难题，开辟了新的途经。
In 1991-1993, the flowering of up to 93-118 days of flowering could be postponed after 30 cuttings, 11 radishes and 12 wild F1 clones after 13-13.5 hours of long-day treatment. Using delayed flowering material in Kaiyuan for the first time to obtain precious Yunnan wild relatives F1 hybrid generation hybrid spikes and a large number of seedlings. The results showed that the long-day can effectively delay the flowering of wild resources, to achieve the purpose of regulating flowering, which is the use of wild sugarcane resources to solve the technical problems not encountered during the flowering period, opened up a new way.