The invention discloses a variety breeding method. According to the variety breeding method, a drought-resistant soybean variety, a
saline-alkaline-tolerant soybean variety, a budworm-resistant variety, a
cyst nematode disease-resistant variety, a soybean
downy mildew-resistant variety, a soybean grey spot-resistant variety and a
soybean mosaic virus disease-resistant variety are used as cross parents, and a variety is bred through hybridization and multiple-cross
polymerization and through multi-generation
stress resistance and
disease and pest resistance identification and screening. The high-stress-resistance soybean variety which can highly
resist seven kinds of stress and diseases and pests and is excellent in agronomic and yield traits is bred. Compared with a common soybean variety, the yield of the bred soybean variety is increased by 15-18% per mu, the
pesticide spraying cost is reduced by 80-90 yuan per mu, the economic benefit can be increased by 300-450 yuan per mu, meanwhile, the variety can be planted in
arid areas and
saline-alkali areas, the
economic income of farmers in the
arid areas and the
saline-alkali areas can be greatly increased, and the life of the farmers is improved; and through a seed screening
machine, seeds are selected, and the seeds which cannot well develop are removed, so that the variety excellencyof the final seeds is ensured, and the
survival rate is increased.