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国内外大量研究表明,棉花杂交种同水稻、玉米、瓜菜等作物一样.有着明显的杂种优势。主要表现在种子生命力强、出苗好、生长势旺、抗逆性强、增产显著,绒长和纤维强力也有一定提高。美国梅依耳(Meyer)总结了20多年的文献指出,陆地棉品种间杂种一代可增产25～35％。山东棉花研究中心承担的国家和省“八五”重点杂交棉利用研究课题,经鉴定的近200个组合中,其中H123、H28等几个杂交种,比当前大面积
A large number of studies at home and abroad show that cotton hybrids have the same heterosis as rice, corn, vegetables and other crops. Mainly in the seeds of strong vitality, good emergence, vigorous growth, strong resistance, yield significant, velvet long and fiber strength also increased. According to more than 20 years of literature summarized by Meyer in the United States, hybrid generations of upland cotton yield 25 to 35% more. Shandong Cotton Research Center undertakes national and provincial “85” key hybrid cotton utilization research topics, identified nearly 200 combinations, including H123, H28 and several hybrids, than the current large area