利用杂种优势是提高农业生产十分有效的途径。在毛主席革命路线指引下,为了“自力更生”地逐步解决纺织工业对长绒棉原料日益增长的需要,我国在纯种海岛棉的选育和海岛棉与陆地棉杂交一代的杂种优势利用研究均取得不少的成就。许多科研单位及农业院校的试验研究都说明了海陆杂种的优势明显,产量接近或超过陆地棉亲本,纤维品质接近海岛棉亲本。这给长江及黄河流域长绒棉的生产开辟了 The use of heterosis is a very effective way to improve agricultural production. Under the guidance of Chairman Mao’s revolutionary line, in order to gradually solve the growing demand of the textile industry for long staple cotton raw materials in order to “self-reliance”, the breeding of pure island cotton and the hybrid utilization of island cotton and upland cotton Research has made a lot of achievements. Many research institutes and agricultural colleges and universities have shown that the advantages of land and sea hybrids obvious, the yield close to or beyond the land cotton parents, fiber quality close to the island cotton parents. This opened up the production of long staple cotton in the Yangtze River and the Yellow River