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从１９７９年起，调查监测广西以至我国主要稻区的褐稻虱生物型，至今除四川稻区的褐稻虱仍属生物型１以外，其他稻区多由生物型１转变为生物型２占优势，即合Ｂｐｈ１抗性基因的Ｍｕｄｇｏ和ＩＲ２６由抗虫变为感虫，并发现在云南思茅，安徽怀宁，江西的东乡，江苏江浦和连云港的褐稻虱田间种群以及广西南宁的少数褐稻虱个体尚可使ＡＳＤ７和ＩＲ（３６）致害。经测定获得了一些能抗生物型２的水稻品种和材料，其中有些广西野生稻抗谱较广的编号，是选育抗虫品种的好材料，可防止新生物型的为害。
Since 1979, the survey and monitoring of brown planthopper biotypes in Guangxi and even in China’s major rice-growing areas has so far been considered to be biotype 1 in all but the rice planthopper in Sichuan Province The results showed that Mudgo and IR26, which fit the Bph1 resistance gene, changed from insect-resistant to susceptible, and found that brown planthopper populations in Simao, Anhui, Huaining in Jiangxi, Dongxiang in Jiangxi, Jiangpu and Lianyungang in Jiangsu and a few brown rice in Guangxi Nanning Individual lice can cause ASD7 and IR (36) damage. Some rice varieties and materials that can resist biotype 2 were obtained. Some wild rice varieties with wide anti-spectrum number are good materials for breeding insect-resistant varieties and can prevent the damage of the new biotypes.