本研究课题把籼稻的抗褐稻虱基因经过籼,粳杂交,并选用具有抗性的粳型中间材料连续复交,使籼稻的抗褐稻虱基因导入粳稻内,从而育成具有中抗褐稻虱的中熟晚粳新品种“沪粳抗”,从而填补了国内外粳稻抗褐虱品种的空白。“沪粳抗”其抗性等级属中抗偏上,在“沪粳抗”上生活的褐稻虱若虫存活率低,成虫产卵量少,导致种群数量增殖缓慢,不易达到造成危害的水平,在褐稻虱的一般发生年份不需要用药防治,即使在特大发生年也只需防治一次即可,因此可节省农本,减少污染和保护害虫的天敌 In this study, indica hybrid rice (Oryza sativae) was crossed with indica and japonica hybrids, and japonica intermediate materials with resistance were selected for continuous reciprocal transformation to induce indica brown planthopper resistance genes into japonica rice, Of middle-maturing late japonica varieties “Shanghai japonica resistance”, thus filling the gaps at home and abroad japonica rice varieties resistant to brown louse. “Shanghai japonica resistance” is resistant to the class of anti-bias, in the “Shanghai japonica resistance” on the brown planthopper nymphs survival rate is low, adult fecundity less, resulting in slow population growth, not easy to reach the level of harm , In the year of general occurrence of brown planthopper do not need drug control, even in the special year can only control once, so can save the capital, reduce pollution and protect the natural enemies of pests