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杂交水稻普遍比亲本生长旺盛,根系发达,分蘖力强,抗逆性强,增产幅度大,有较强的再生能力。但杂交水稻只能利用一代(二代以后因分离而减产),需要年年制种,生产环节复杂。怎样使杂交水稻象常规品种那样连续在生产上应用,已成为当前迫切需要研究解决的问题。
Hybrid rice is generally more vigorous than the parents, developed root system, strong tillering ability, strong resistance, large yield, strong reproductive capacity. However, the hybrid rice can only use one generation (after the second generation because of the separation and cut), need to planted every year, the production process is complicated. How to make the continuous use of hybrid rice as a regular variety in production has become an urgent issue to be studied and solved.